/******************************************************************************
 * Product: Adempiere ERP & CRM Smart Business Solution                       *
 * Copyright (C) 1999-2006 ComPiere, Inc. All Rights Reserved.                *
 * This program is free software; you can redistribute it and/or modify it    *
 * under the terms version 2 of the GNU General Public License as published   *
 * by the Free Software Foundation. This program is distributed in the hope   *
 * that it will be useful, but WITHOUT ANY WARRANTY; without even the implied *
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.           *
 * See the GNU General Public License for more details.                       *
 * You should have received a copy of the GNU General Public License along    *
 * with this program; if not, write to the Free Software Foundation, Inc.,    *
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.                     *
 * For the text or an alternative of this public license, you may reach us    *
 * ComPiere, Inc., 2620 Augustine Dr. #245, Santa Clara, CA 95054, USA        *
 * or via info@compiere.org or http://www.compiere.org/license.html           *
 *****************************************************************************/
package org.compiere.model;

import java.math.BigDecimal;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Properties;
import java.util.logging.Level;

import org.adempiere.exceptions.NegativeInventoryDisallowedException;
import org.compiere.util.CLogger;
import org.compiere.util.DB;
import org.compiere.util.Env;
import org.compiere.util.Util;

/**
 * 	Inventory On Hand Storage Model
 *
 *	@author Jorg Janke
 *	@version $Id: MStorageOnHand.java,v 1.3 2006/07/30 00:51:05 jjanke Exp $
 */
public class MStorageOnHand extends X_M_StorageOnHand
{
	/**
	 * generated serial id
	 */
	private static final long serialVersionUID = -3820729340100521329L;

	/**
	 * @param ctx
	 * @param M_Locator_ID
	 * @param M_Product_ID
	 * @param M_AttributeSetInstance_ID
	 * @param trxName
	 * @deprecated
	 * @return MStorageOnHand
	 */
	@Deprecated
	public static MStorageOnHand get (Properties ctx, int M_Locator_ID, 
			int M_Product_ID, int M_AttributeSetInstance_ID, String trxName) {
		return get (ctx, M_Locator_ID, M_Product_ID, M_AttributeSetInstance_ID, null, trxName);
	}

	/**
	 * 	Get On Hand Storage
	 *	@param ctx context
	 *	@param M_Locator_ID locator
	 *	@param M_Product_ID product
	 *	@param M_AttributeSetInstance_ID instance
	 *  @param dateMPolicy optional DateMaterialPolicy filter
	 *	@param trxName transaction
	 *	@return existing MStorageOnHand or null
	 */
	public static MStorageOnHand get (Properties ctx, int M_Locator_ID, 
		int M_Product_ID, int M_AttributeSetInstance_ID,Timestamp dateMPolicy, String trxName)
	{
		String sqlWhere = "M_Locator_ID=? AND M_Product_ID=? AND ";
		if (M_AttributeSetInstance_ID == 0)
			sqlWhere += "(M_AttributeSetInstance_ID=? OR M_AttributeSetInstance_ID IS NULL)";
		else
			sqlWhere += "M_AttributeSetInstance_ID=?";

		if (dateMPolicy != null)
			sqlWhere += " AND DateMaterialPolicy=trunc(cast(? as date))";
		
		Query query = new Query(ctx, MStorageOnHand.Table_Name, sqlWhere, trxName);
		if (dateMPolicy != null)
			query.setParameters(M_Locator_ID, M_Product_ID, M_AttributeSetInstance_ID, dateMPolicy);
		else
			query.setParameters(M_Locator_ID, M_Product_ID, M_AttributeSetInstance_ID);									 
		MStorageOnHand retValue = query.first();
		
		if (retValue == null) {
			if (s_log.isLoggable(Level.FINE)) s_log.fine("Not Found - M_Locator_ID=" + M_Locator_ID 
					+ ", M_Product_ID=" + M_Product_ID + ", M_AttributeSetInstance_ID=" + M_AttributeSetInstance_ID);
		} else {
			if (s_log.isLoggable(Level.FINE)) s_log.fine("M_Locator_ID=" + M_Locator_ID 
					+ ", M_Product_ID=" + M_Product_ID + ", M_AttributeSetInstance_ID=" + M_AttributeSetInstance_ID);
		}
		return retValue;
	}	//	get

	/**
	 * 	Get all Storages for Product with ASI and QtyOnHand != 0
	 *	@param ctx context
	 *	@param M_Product_ID product
	 *	@param M_Locator_ID locator
	 *	@param FiFo true for fifo, false for lifo
	 *	@param trxName transaction
	 *	@return array of MStorageOnHand
	 */
	public static MStorageOnHand[] getAllWithASI (Properties ctx, int M_Product_ID, int M_Locator_ID, 
		boolean FiFo, String trxName)
	{
		ArrayList<MStorageOnHand> list = new ArrayList<MStorageOnHand>();
		String sql = "SELECT * FROM M_StorageOnHand "
			+ "WHERE M_Product_ID=? AND M_Locator_ID=?"
			+ " AND M_AttributeSetInstance_ID > 0 "
			+ " AND QtyOnHand <> 0 "			
			+ "ORDER BY M_AttributeSetInstance_ID";
		if (!FiFo)
			sql += " DESC";
		PreparedStatement pstmt = null;
		ResultSet rs = null;
		try
		{
			pstmt = DB.prepareStatement (sql, trxName);
			pstmt.setInt (1, M_Product_ID);
			pstmt.setInt (2, M_Locator_ID);
			rs = pstmt.executeQuery ();
			while (rs.next ())
				list.add(new MStorageOnHand (ctx, rs, trxName));
		}
		catch (SQLException ex)
		{
			s_log.log(Level.SEVERE, sql, ex);
		}
		finally
		{
			DB.close(rs, pstmt);
			rs = null; pstmt = null;
		}
		MStorageOnHand[] retValue = new MStorageOnHand[list.size()];
		list.toArray(retValue);
		return retValue;
	}	//	getAllWithASI

	/**
	 * 	Get all Storages for Product where QtyOnHand != 0
	 *	@param ctx context
	 *	@param M_Product_ID product
	 *	@param M_Locator_ID locator, 0 to match all locator
	 *	@param trxName transaction
	 *	@return array of MStorageOnHand
	 */
	public static MStorageOnHand[] getAll (Properties ctx, 
		int M_Product_ID, int M_Locator_ID, String trxName)
	{
		return getAll(ctx, M_Product_ID, M_Locator_ID, trxName, false, 0);
	}
	
	/**
	 * 	Get all Storages for Product where QtyOnHand != 0
	 *	@param ctx context
	 *	@param M_Product_ID product
	 *	@param M_Locator_ID locator, 0 to match all locator
	 *	@param trxName transaction
	 *  @param forUpdate true to use For Update clause
	 *  @param timeout query timeout if forUpdate is true (0 for no timeout)
	 *	@return array of MStorageOnHand
	 */
	public static MStorageOnHand[] getAll (Properties ctx, 
		int M_Product_ID, int M_Locator_ID, String trxName, boolean forUpdate, int timeout)
	{
		return getAll(ctx, M_Product_ID, M_Locator_ID, false, true, trxName, forUpdate, timeout);
	}
	
	/**
	 * Get all Storages for Product where QtyOnHand != 0
	 * @param ctx context
	 * @param M_Product_ID product
	 * @param M_Locator_ID locator, 0 to match all locator
	 * @param locatorPriority If true, sort descending by locator Priority No 
	 * @param fifo Sort ascending(FIFO) or descending(LIFO) by date material policy, m_attributesetinstance_id
	 * @param trxName transaction
	 * @param forUpdate If true, acquire DB lock with FOR UPDATE clause
	 * @param timeout query timeout if forUpdate is true (0 for no timeout)
	 * @return array of MStorageOnHand
	 */
	public static MStorageOnHand[] getAll (Properties ctx, 
		int M_Product_ID, int M_Locator_ID, boolean locatorPriority, boolean fifo, String trxName, boolean forUpdate, int timeout)
	{
		String sqlWhere = "M_Product_ID=? AND QtyOnHand <> 0";
		if (M_Locator_ID > 0)
			sqlWhere = sqlWhere + " AND M_Locator_ID=? ";
		Query query = new Query(ctx, MStorageOnHand.Table_Name, sqlWhere, trxName);
		if (M_Locator_ID > 0)
			query.setParameters(M_Product_ID, M_Locator_ID);
		else
			query.setParameters(M_Product_ID);		
		MProduct product = MProduct.get(ctx, M_Product_ID);
		StringBuilder orderBy = new StringBuilder();
		if (locatorPriority)
		{
			query.addJoinClause("JOIN M_Locator locator ON (M_StorageOnHand.M_Locator_ID=locator.M_Locator_ID) ");
			orderBy.append("locator.PriorityNo DESC, ");
		}
		if (product.isUseGuaranteeDateForMPolicy()) 
		{
			query.addJoinClause(" LEFT OUTER JOIN M_AttributeSetInstance asi ON (M_StorageOnHand.M_AttributeSetInstance_ID=asi.M_AttributeSetInstance_ID) ");
			orderBy.append("asi.").append(I_M_AttributeSetInstance.COLUMNNAME_GuaranteeDate);
			if (!fifo)
				orderBy.append(" DESC");
			orderBy.append(", ");
			orderBy.append(MStorageOnHand.Table_Name).append(".").append(MStorageOnHand.COLUMNNAME_M_AttributeSetInstance_ID);
			if (!fifo)
				orderBy.append(" DESC");
			query.setOrderBy(orderBy.toString());
		}
		else
		{
			orderBy.append(MStorageOnHand.Table_Name).append(".").append(MStorageOnHand.COLUMNNAME_DateMaterialPolicy);
			if (!fifo)
				orderBy.append(" DESC");
			orderBy.append(", ");
			orderBy.append(MStorageOnHand.Table_Name).append(".").append(MStorageOnHand.COLUMNNAME_M_AttributeSetInstance_ID);
			if (!fifo)
				orderBy.append(" DESC");
			query.setOrderBy(orderBy.toString());
		}
		if (forUpdate)
		{
			query.setForUpdate(forUpdate);
			if (timeout > 0)
			{
				query.setQueryTimeout(timeout);
			}
		}
		List<MStorageOnHand> list = query.list(); 
		
		MStorageOnHand[] retValue = new MStorageOnHand[list.size()];
		list.toArray(retValue);
		return retValue;
	}	//	getAll
	
	/**
	 * Get On Hand Storage
	 * @param ctx context
	 * @param M_Product_ID product
	 * @param M_Locator_ID locator
	 * @param M_AttributeSetInstance_ID instance
	 * @param dateMPolicy optional DateMaterialPolicy filter
	 * @param ignoreZeroQty if true, only get storage record with on hand != 0
	 * @param trxName transaction
	 * @return array of MStorageOnHand
	 */
	public static MStorageOnHand[] getAll (Properties ctx, 
		int M_Product_ID, int M_Locator_ID, int M_AttributeSetInstance_ID, Timestamp dateMPolicy, boolean ignoreZeroQty, String trxName)
	{
		String sqlWhere = "M_Locator_ID=? AND M_Product_ID=? AND ";
		
		if (M_AttributeSetInstance_ID == 0)
			sqlWhere += "(M_AttributeSetInstance_ID=? OR M_AttributeSetInstance_ID IS NULL)";
		else
			sqlWhere += "M_AttributeSetInstance_ID=?";
		
		if (ignoreZeroQty)
			sqlWhere += " AND QtyOnHand<>0 ";
		
		if (dateMPolicy != null)
			sqlWhere += " AND DateMaterialPolicy=trunc(cast(? as date))";
		
		Query query = new Query(ctx, MStorageOnHand.Table_Name, sqlWhere, trxName);
		
		if (dateMPolicy != null)
			query.setParameters(M_Locator_ID, M_Product_ID, M_AttributeSetInstance_ID, dateMPolicy);
		else
			query.setParameters(M_Locator_ID, M_Product_ID, M_AttributeSetInstance_ID);
		
		List<MStorageOnHand> list = query.list();
		
		if (list == null || list.isEmpty()) {
			if (s_log.isLoggable(Level.FINE)) s_log.fine("Not Found - M_Locator_ID=" + M_Locator_ID 
					+ ", M_Product_ID=" + M_Product_ID + ", M_AttributeSetInstance_ID=" + M_AttributeSetInstance_ID);
		} else {
			if (s_log.isLoggable(Level.FINE)) s_log.fine("Found " + list.size() + " - M_Locator_ID=" + M_Locator_ID 
					+ ", M_Product_ID=" + M_Product_ID + ", M_AttributeSetInstance_ID=" + M_AttributeSetInstance_ID);
		}
		
		MStorageOnHand[] retValue = new MStorageOnHand[list.size()];
		list.toArray(retValue);
		return retValue;
	}	//	getAll
	
	/**
	 * 	Get On Hand Storage for Product across warehouses
	 *	@param ctx context
	 *	@param M_Product_ID product
	 *	@param trxName transaction
	 *	@return array of MStorageOnHand
	 */
	public static MStorageOnHand[] getOfProduct (Properties ctx, int M_Product_ID, String trxName)
	{
		String sqlWhere = "M_Product_ID=?";
		
		List<MStorageOnHand> list = new Query(ctx, MStorageOnHand.Table_Name, sqlWhere, trxName)
								.setParameters(M_Product_ID)
								.list(); 
		
		MStorageOnHand[] retValue = new MStorageOnHand[list.size()];
		list.toArray(retValue);
		return retValue;
		
	}	//	getOfProduct
	
	/**
	 * 	Get On Hand Storage for Warehouse
	 *	@param ctx context
	 *	@param M_Warehouse_ID 
	 *	@param M_Product_ID product
	 *	@param M_AttributeSetInstance_ID instance
	 *	@param M_AttributeSet_ID attribute set (NOT USED)
	 *	@param allAttributeInstances if true, all attribute set instances (NOT USED)
	 *	@param minGuaranteeDate optional minimum guarantee date filter. ignore if M_AttributeSetInstance_ID != 0
	 *	@param FiFo first in-first-out
	 *	@param trxName transaction
	 *	@return existing - ordered by location priority (desc) and/or guarantee date
	 *
	 *  @deprecated
	 */
	@Deprecated
	public static MStorageOnHand[] getWarehouse (Properties ctx, int M_Warehouse_ID, 
		int M_Product_ID, int M_AttributeSetInstance_ID, int M_AttributeSet_ID,
		boolean allAttributeInstances, Timestamp minGuaranteeDate,
		boolean FiFo, String trxName)
	{
		return getWarehouse(ctx, M_Warehouse_ID, M_Product_ID, M_AttributeSetInstance_ID, 
				minGuaranteeDate, FiFo, false, 0, trxName);
	}
	
	/**
	 * 	Get On Hand Storage for Warehouse or locator
	 *	@param ctx context
	 *	@param M_Warehouse_ID ignore if M_Locator_ID &gt; 0
	 *	@param M_Product_ID product
	 *	@param M_AttributeSetInstance_ID instance id, 0 to retrieve all instance
	 *	@param minGuaranteeDate optional minimum guarantee date filter. ignore if M_AttributeSetInstance_ID != 0
	 *	@param FiFo true first in-first-out, false for LIFO
	 *  @param positiveOnly if true, only return storage records with qtyOnHand &gt; 0
	 *  @param M_Locator_ID optional locator id
	 *	@param trxName transaction
	 *	@return array of MStorageOnHand - ordered by location priority (desc) and/or guarantee date
	 */
	public static MStorageOnHand[] getWarehouse (Properties ctx, int M_Warehouse_ID, 
		int M_Product_ID, int M_AttributeSetInstance_ID, Timestamp minGuaranteeDate,
		boolean FiFo, boolean positiveOnly, int M_Locator_ID, String trxName)
	{
		return getWarehouse(ctx, M_Warehouse_ID, M_Product_ID, M_AttributeSetInstance_ID, minGuaranteeDate, FiFo, 
				positiveOnly, M_Locator_ID, trxName, false);
	}
	
	/**
	 * 	Get On Hand Storage for Warehouse or locator
	 *	@param ctx context
	 *	@param M_Warehouse_ID ignore if M_Locator_ID &gt; 0
	 *	@param M_Product_ID product
	 *	@param M_AttributeSetInstance_ID instance id, 0 to retrieve all instance
	 *	@param minGuaranteeDate optional minimum guarantee date filter. ignore if M_AttributeSetInstance_ID != 0
	 *	@param FiFo true for first in-first-out, false for LIFO
	 *  @param positiveOnly if true, only return storage records with qtyOnHand &gt; 0
	 *  @param M_Locator_ID optional locator id
	 *	@param trxName transaction
	 *  @param forUpdate true to acquire DB lock with FOR UPDATE clause
	 *	@return array of MStorageOnHand - ordered by location priority (desc) and/or guarantee date
	 */
	public static MStorageOnHand[] getWarehouse (Properties ctx, int M_Warehouse_ID, 
		int M_Product_ID, int M_AttributeSetInstance_ID, Timestamp minGuaranteeDate,
		boolean FiFo, boolean positiveOnly, int M_Locator_ID, String trxName, boolean forUpdate)
	{
		return getWarehouse(ctx, M_Warehouse_ID, M_Product_ID, M_AttributeSetInstance_ID, minGuaranteeDate, FiFo, positiveOnly, M_Locator_ID, trxName, forUpdate, 0);
	}
	
	/**
	 * 	Get On Hand Storage for Warehouse or locator
	 *	@param ctx context
	 *	@param M_Warehouse_ID ignore if M_Locator_ID &gt; 0
	 *	@param M_Product_ID product
	 *	@param M_AttributeSetInstance_ID instance id, 0 to retrieve all instance
	 *	@param minGuaranteeDate optional minimum guarantee date filter. ignore if M_AttributeSetInstance_ID != 0
	 *	@param FiFo true for first in-first-out, false for LIFO
	 *  @param positiveOnly if true, only return storage records with qtyOnHand &gt; 0
	 *  @param M_Locator_ID optional locator id
	 *	@param trxName transaction
	 *  @param forUpdate true to acquire DB lock with FOR UPDATE clause
	 *  @param timeout if forUpdate is true, value for query timeout (0 for no timeout).
	 *	@return array of MStorageOnHand - ordered by location priority (desc) and/or guarantee date
	 */
	public static MStorageOnHand[] getWarehouse (Properties ctx, int M_Warehouse_ID, 
		int M_Product_ID, int M_AttributeSetInstance_ID, Timestamp minGuaranteeDate,
		boolean FiFo, boolean positiveOnly, int M_Locator_ID, String trxName, boolean forUpdate, int timeout)
	{
		if ((M_Warehouse_ID == 0 && M_Locator_ID == 0) || M_Product_ID == 0)
			return new MStorageOnHand[0];
		
		boolean allAttributeInstances = false;
		if (M_AttributeSetInstance_ID == 0)
			allAttributeInstances = true;		
		
		ArrayList<MStorageOnHand> list = new ArrayList<MStorageOnHand>();
		String sql;
		if (! allAttributeInstances)
		{
			//	Specific Attribute Set Instance
			sql = "SELECT s.M_Product_ID,s.M_Locator_ID,s.M_AttributeSetInstance_ID,"
				+ "s.AD_Client_ID,s.AD_Org_ID,s.IsActive,s.Created,s.CreatedBy,s.Updated,s.UpdatedBy,"
				+ "s.QtyOnHand,s.DateLastInventory,s.M_StorageOnHand_UU,s.DateMaterialPolicy "
				+ "FROM M_StorageOnHand s"
				+ " INNER JOIN M_Locator l ON (l.M_Locator_ID=s.M_Locator_ID) ";
			if (M_Locator_ID > 0)
				sql += "WHERE l.M_Locator_ID = ?";
			else
				sql += "WHERE l.M_Warehouse_ID=?";
			sql += " AND s.M_Product_ID=?"
				 + " AND COALESCE(s.M_AttributeSetInstance_ID,0)=? ";
			if (positiveOnly)
			{
				sql += " AND s.QtyOnHand > 0 ";
			}
			else
			{
				sql += " AND s.QtyOnHand <> 0 ";
			}
			sql += " ORDER BY l.PriorityNo DESC, DateMaterialPolicy ";
			if (!FiFo)
				sql += " DESC, s.M_AttributeSetInstance_ID DESC ";
			else
				sql += ", s.M_AttributeSetInstance_ID ";
		}
		else
		{
			//	All Attribute Set Instances
			sql = "SELECT s.M_Product_ID,s.M_Locator_ID,s.M_AttributeSetInstance_ID,"
				+ " s.AD_Client_ID,s.AD_Org_ID,s.IsActive,s.Created,s.CreatedBy,s.Updated,s.UpdatedBy,"
				+ " s.QtyOnHand,s.DateLastInventory,s.M_StorageOnHand_UU,s.DateMaterialPolicy "
				+ " FROM M_StorageOnHand s"
				+ " INNER JOIN M_Locator l ON (l.M_Locator_ID=s.M_Locator_ID)"
				+ " LEFT OUTER JOIN M_AttributeSetInstance asi ON (s.M_AttributeSetInstance_ID=asi.M_AttributeSetInstance_ID) ";
			if (M_Locator_ID > 0)
				sql += "WHERE l.M_Locator_ID = ?";
			else
				sql += "WHERE l.M_Warehouse_ID=?";
			sql += " AND s.M_Product_ID=? ";
			if (positiveOnly)
			{
				sql += " AND s.QtyOnHand > 0 ";
			}
			else
			{
				sql += " AND s.QtyOnHand <> 0 ";
			}
			if (minGuaranteeDate != null)
			{
				sql += " AND (asi.GuaranteeDate IS NULL OR asi.GuaranteeDate>?) ";
			}
			MProduct product = MProduct.get(Env.getCtx(), M_Product_ID);
			if(product.isUseGuaranteeDateForMPolicy()){
				sql += " ORDER BY l.PriorityNo DESC, COALESCE(asi.GuaranteeDate,s.DateMaterialPolicy)";
				if (!FiFo)
					sql += " DESC, s.M_AttributeSetInstance_ID DESC ";
				else
					sql += ", s.M_AttributeSetInstance_ID ";
			}
			else
			{
				sql += " ORDER BY l.PriorityNo DESC, s.DateMaterialPolicy";
				if (!FiFo)
					sql += " DESC, s.M_AttributeSetInstance_ID DESC ";
				else
					sql += ", s.M_AttributeSetInstance_ID ";
			}
			sql += ", s.QtyOnHand DESC";
		} 
		PreparedStatement pstmt = null;
		ResultSet rs = null;
		try
		{
			pstmt = DB.prepareStatement(sql, trxName);
			pstmt.setInt(1, M_Locator_ID > 0 ? M_Locator_ID : M_Warehouse_ID);
			pstmt.setInt(2, M_Product_ID);
			if (!allAttributeInstances)
			{
				pstmt.setInt(3, M_AttributeSetInstance_ID);
			}
			else if (minGuaranteeDate != null)
			{
				pstmt.setTimestamp(3, minGuaranteeDate);
			}
			rs = pstmt.executeQuery();
			while (rs.next())
			{	
				if(rs.getBigDecimal(11).signum() != 0)
				{
					MStorageOnHand storage = new MStorageOnHand (ctx, rs, trxName);
					if (!Util.isEmpty(trxName) && forUpdate)
					{
						DB.getDatabase().forUpdate(storage, timeout);
					}
					list.add (storage);
				}
			}	
		}
		catch (Exception e)
		{
			s_log.log(Level.SEVERE, sql, e);
		}
		finally
		{
			DB.close(rs, pstmt);
			rs = null; pstmt = null;
		}
		MStorageOnHand[] retValue = new MStorageOnHand[list.size()];
		list.toArray(retValue);
		return retValue;
	}	//	getWarehouse

	/**
	 * 	Get On Hand Storage for Warehouse or locator
	 *	@param ctx context
	 *	@param M_Warehouse_ID ignore if M_Locator_ID &gt; 0
	 *	@param M_Product_ID product
	 *	@param M_AttributeSetInstance_ID instance id, 0 to retrieve all instance
	 *	@param minGuaranteeDate optional minimum guarantee date filter. ignore if M_AttributeSetInstance_ID != 0
	 *	@param FiFo true for first in-first-out, false for LIFO
	 *  @param M_Locator_ID optional locator id
	 *	@param trxName transaction
	 *	@return array of MStorageOnHand - ordered by location priority (desc) and/or guarantee date
	 */
	public static MStorageOnHand[] getWarehouseNegative (Properties ctx, int M_Warehouse_ID, 
		int M_Product_ID, int M_AttributeSetInstance_ID, Timestamp minGuaranteeDate,
		boolean FiFo, int M_Locator_ID, String trxName)
	{
		return getWarehouseNegative(ctx, M_Warehouse_ID, M_Product_ID, M_AttributeSetInstance_ID, minGuaranteeDate, FiFo, M_Locator_ID, trxName, false);
	}
	
	/**
	 * 	Get On Hand Storage for Warehouse or locator
	 *	@param ctx context
	 *	@param M_Warehouse_ID ignore if M_Locator_ID &gt; 0
	 *	@param M_Product_ID product
	 *	@param M_AttributeSetInstance_ID instance id, 0 to retrieve storages that don't have asi, -1 to retrieve all instance
	 *	@param minGuaranteeDate optional minimum guarantee date filter. ignore if M_AttributeSetInstance_ID != 0
	 *	@param FiFo true for first in-first-out, false for LIFO
	 *  @param M_Locator_ID optional locator id
	 *	@param trxName transaction
	 *  @param forUpdate true to acquire DB lock with FOR UPDATE clause
	 *	@return array of MStorageOnHand - ordered by location priority (desc) and/or guarantee date
	 */
	public static MStorageOnHand[] getWarehouseNegative (Properties ctx, int M_Warehouse_ID, 
		int M_Product_ID, int M_AttributeSetInstance_ID, Timestamp minGuaranteeDate,
		boolean FiFo, int M_Locator_ID, String trxName, boolean forUpdate)
	{
		return getWarehouseNegative(ctx, M_Warehouse_ID, M_Product_ID, M_AttributeSetInstance_ID, minGuaranteeDate, FiFo, M_Locator_ID, trxName, forUpdate, 0);
	}
	
	/**
	 * 	Get On Hand Storage for Warehouse or locator
	 *	@param ctx context
	 *	@param M_Warehouse_ID ignore if M_Locator_ID &gt; 0
	 *	@param M_Product_ID product
	 *	@param M_AttributeSetInstance_ID instance id, 0 to retrieve storages that don't have asi, -1 to retrieve all instance
	 *	@param minGuaranteeDate optional minimum guarantee date filter
	 *	@param FiFo true for first in-first-out, false for LIFO
	 *  @param M_Locator_ID optional locator id
	 *	@param trxName transaction
	 *  @param forUpdate true to acquire DB lock with FOR UPDATE clause
	 *  @param timeout if forUpdate is true, value for query timeout (0 for no timeout).
	 *	@return array of MStorageOnHand - ordered by location priority (desc) and/or guarantee date
	 */
	public static MStorageOnHand[] getWarehouseNegative (Properties ctx, int M_Warehouse_ID, 
		int M_Product_ID, int M_AttributeSetInstance_ID, Timestamp minGuaranteeDate,
		boolean FiFo, int M_Locator_ID, String trxName, boolean forUpdate, int timeout)
	{
		if ((M_Warehouse_ID == 0 && M_Locator_ID == 0) || M_Product_ID == 0)
			return new MStorageOnHand[0];
		
		ArrayList<MStorageOnHand> list = new ArrayList<MStorageOnHand>();
		String sql = "SELECT s.M_Product_ID,s.M_Locator_ID,s.M_AttributeSetInstance_ID,"
			+ "s.AD_Client_ID,s.AD_Org_ID,s.IsActive,s.Created,s.CreatedBy,s.Updated,s.UpdatedBy,"
			+ "s.QtyOnHand,s.DateLastInventory,s.M_StorageOnHand_UU,s.DateMaterialPolicy "
			+ "FROM M_StorageOnHand s"
			+ " INNER JOIN M_Locator l ON (l.M_Locator_ID=s.M_Locator_ID)"
			+ " LEFT OUTER JOIN M_AttributeSetInstance asi ON (s.M_AttributeSetInstance_ID=asi.M_AttributeSetInstance_ID) ";
		if (M_Locator_ID > 0)
			sql += "WHERE l.M_Locator_ID = ?";
		else
			sql += "WHERE l.M_Warehouse_ID=?";
		sql += " AND s.M_Product_ID=? "
			+ " AND s.QtyOnHand < 0 ";
		
		if (minGuaranteeDate != null)
		{
			sql += "AND (asi.GuaranteeDate IS NULL OR asi.GuaranteeDate>?) ";
		}
		
		if (M_AttributeSetInstance_ID > 0)
		{
			sql += "AND s.M_AttributeSetInstance_ID=? ";
		}
		else if (M_AttributeSetInstance_ID == 0)
		{
			sql += "AND (s.M_AttributeSetInstance_ID=0 OR s.M_AttributeSetInstance_ID IS NULL) ";
		}
		
		MProduct product = MProduct.get(Env.getCtx(), M_Product_ID, trxName);
		
		if(product.isUseGuaranteeDateForMPolicy()){
			sql += " ORDER BY l.PriorityNo DESC, " +
				   "asi.GuaranteeDate";
			if (!FiFo)
				sql += " DESC";
		}
		else
		{
			sql += " ORDER BY l.PriorityNo DESC, s.DateMaterialPolicy";
			if (!FiFo)
				sql += " DESC, s.M_AttributeSetInstance_ID DESC ";
			else
				sql += ", s.M_AttributeSetInstance_ID ";
		}
		
		sql += ", s.QtyOnHand DESC";
		
		PreparedStatement pstmt = null;
		ResultSet rs = null;
		try
		{
			int index = 0;
			pstmt = DB.prepareStatement(sql, trxName);
			pstmt.setInt(++index, M_Locator_ID > 0 ? M_Locator_ID : M_Warehouse_ID);
			pstmt.setInt(++index, M_Product_ID);
			if (minGuaranteeDate != null)
			{
				pstmt.setTimestamp(++index, minGuaranteeDate);
			}
			if (M_AttributeSetInstance_ID > 0)
			{
				pstmt.setInt(++index, M_AttributeSetInstance_ID);
			}
			rs = pstmt.executeQuery();
			while (rs.next())
			{	
				if(rs.getBigDecimal(11).signum() != 0)
				{
					MStorageOnHand storage = new MStorageOnHand (ctx, rs, trxName);
					if (!Util.isEmpty(trxName) && forUpdate)
					{
						DB.getDatabase().forUpdate(storage, timeout);
					}
					list.add(storage);
				}
			}	
		}
		catch (Exception e)
		{
			s_log.log(Level.SEVERE, sql, e);
		}
		finally
		{
			DB.close(rs, pstmt);
			rs = null; pstmt = null;
		}
		MStorageOnHand[] retValue = new MStorageOnHand[list.size()];
		list.toArray(retValue);
		return retValue;
	}	//	getWarehouse
		
	/**
	 * 	Create or Get On Hand Storage
	 *	@param ctx context
	 *	@param M_Locator_ID locator
	 *	@param M_Product_ID product
	 *	@param M_AttributeSetInstance_ID instance
	 *	@param trxName transaction
	 *	@return existing or new MStorageOnHand
	 */
	public static MStorageOnHand getCreate (Properties ctx, int M_Locator_ID, 
		int M_Product_ID, int M_AttributeSetInstance_ID,Timestamp dateMPolicy, String trxName)
	{
		return getCreate(ctx, M_Locator_ID, M_Product_ID, M_AttributeSetInstance_ID, dateMPolicy, trxName, false);
	}
	
	/**
	 * 	Create or Get On Hand Storage
	 *	@param ctx context
	 *	@param M_Locator_ID locator
	 *	@param M_Product_ID product
	 *	@param M_AttributeSetInstance_ID instance
	 *  @param dateMPolicy optional DateMaterialPolicy filter
	 *	@param trxName transaction
	 *  @param forUpdate true to acquire DB lock with FOR UPDATE clause
	 *	@return existing or new MStorageOnHand
	 */
	public static MStorageOnHand getCreate (Properties ctx, int M_Locator_ID, 
		int M_Product_ID, int M_AttributeSetInstance_ID,Timestamp dateMPolicy, String trxName, boolean forUpdate)
	{
		return getCreate(ctx, M_Locator_ID, M_Product_ID, M_AttributeSetInstance_ID, dateMPolicy, trxName, forUpdate, 0);
	}
	
	/**
	 * 	Create or Get On Hand Storage
	 *	@param ctx context
	 *	@param M_Locator_ID locator
	 *	@param M_Product_ID product
	 *	@param M_AttributeSetInstance_ID instance
	 *  @param dateMPolicy optional DateMaterialPolicy filter
	 *	@param trxName transaction
	 *  @param forUpdate true to acquire DB lock with FOR UPDATE clause
	 *  @param timeout if forUpdate is true, value for query timeout (0 for no timeout).
	 *	@return existing or new MStorageOnHand
	 */
	public static MStorageOnHand getCreate (Properties ctx, int M_Locator_ID, 
		int M_Product_ID, int M_AttributeSetInstance_ID,Timestamp dateMPolicy, String trxName, boolean forUpdate, int timeout)
	{
		if (M_Locator_ID == 0)
			throw new IllegalArgumentException("M_Locator_ID=0");
		if (M_Product_ID == 0)
			throw new IllegalArgumentException("M_Product_ID=0");		
		if (dateMPolicy != null)
			dateMPolicy = Util.removeTime(dateMPolicy);

		MStorageOnHand retValue = get(ctx, M_Locator_ID, M_Product_ID, M_AttributeSetInstance_ID,dateMPolicy, trxName);
		if (retValue != null)
		{
			if (forUpdate)
				DB.getDatabase().forUpdate(retValue, timeout);
			return retValue;
		}
		
		//	Insert row based on locator
		MLocator locator = new MLocator (ctx, M_Locator_ID, trxName);
		if (locator.get_ID() != M_Locator_ID)
			throw new IllegalArgumentException("Not found M_Locator_ID=" + M_Locator_ID);
		//
		if (dateMPolicy == null)
		{
			dateMPolicy = new Timestamp(new Date().getTime());		
			dateMPolicy = Util.removeTime(dateMPolicy);
		}
		retValue = new MStorageOnHand (locator, M_Product_ID, M_AttributeSetInstance_ID,dateMPolicy);
		retValue.saveEx(trxName);
		if (s_log.isLoggable(Level.FINE)) s_log.fine("New " + retValue);
		return retValue;
	}	//	getCreate

	/**
	 * 	Update On Hand Storage
	 * 	Called from MProjectIssue
	 *	@param ctx context
	 *	@param M_Warehouse_ID warehouse
	 *	@param M_Locator_ID locator
	 *	@param M_Product_ID product
	 *	@param M_AttributeSetInstance_ID AS Instance
	 *	@param diffQtyOnHand add on hand
	 *	@param trxName transaction
	 *	@return true if updated
	 *  @deprecated
	 */
	@Deprecated
	public static boolean add (Properties ctx, int M_Warehouse_ID, int M_Locator_ID, 
		int M_Product_ID, int M_AttributeSetInstance_ID,
		BigDecimal diffQtyOnHand, String trxName)
	{
		return add(ctx, M_Warehouse_ID, M_Locator_ID, M_Product_ID, M_AttributeSetInstance_ID, diffQtyOnHand, null, trxName);
	}
	
	/**
	 * 	Update On Hand Storage
	 * 	Called from MProjectIssue
	 *	@param ctx context
	 *	@param M_Warehouse_ID warehouse, not use
	 *	@param M_Locator_ID locator
	 *	@param M_Product_ID product
	 *	@param M_AttributeSetInstance_ID AS Instance
	 *	@param diffQtyOnHand add on hand
	 *  @param dateMPolicy
	 *	@param trxName transaction
	 *	@return true if updated
	 *  @deprecated
	 */
	@Deprecated	
	public static boolean add (Properties ctx, int M_Warehouse_ID, int M_Locator_ID, 
		int M_Product_ID, int M_AttributeSetInstance_ID,
		BigDecimal diffQtyOnHand,Timestamp dateMPolicy, String trxName)
	{
		return add(ctx, M_Locator_ID, M_Product_ID, M_AttributeSetInstance_ID, diffQtyOnHand, dateMPolicy, null, trxName);
	}
	
	public static boolean add (Properties ctx, int M_Locator_ID, 
		int M_Product_ID, int M_AttributeSetInstance_ID,
		BigDecimal diffQtyOnHand,Timestamp dateMPolicy, String trxName)
	{
		return add(ctx, M_Locator_ID, M_Product_ID, M_AttributeSetInstance_ID, diffQtyOnHand, dateMPolicy, null, trxName);
	}
	
	/**
	 * 	Update On Hand Storage
	 * 	Called from MProjectIssue
	 *	@param ctx context
	 *	@param M_Locator_ID locator
	 *	@param M_Product_ID product
	 *	@param M_AttributeSetInstance_ID AS Instance
	 *	@param diffQtyOnHand difference to add to current on hand quantity
	 *  @param dateMPolicy optional DateMaterialPolicy filter
	 *	@param trxName transaction
	 *	@return true if updated
	 */
	public static boolean add (Properties ctx, int M_Locator_ID, 
		int M_Product_ID, int M_AttributeSetInstance_ID,
		BigDecimal diffQtyOnHand,Timestamp dateMPolicy, Timestamp dateLastInventory, String trxName)
	{
		if (diffQtyOnHand == null || diffQtyOnHand.signum() == 0)
			return true;

		if (dateMPolicy != null)
			dateMPolicy = Util.removeTime(dateMPolicy);

		//	Get Storage
		MStorageOnHand storage = getCreate (ctx, M_Locator_ID, M_Product_ID, M_AttributeSetInstance_ID, dateMPolicy, trxName, true, 120);
		//	Verify
		if (storage.getM_Locator_ID() != M_Locator_ID 
			&& storage.getM_Product_ID() != M_Product_ID
			&& storage.getM_AttributeSetInstance_ID() != M_AttributeSetInstance_ID)
		{
			s_log.severe ("No Storage found - M_Locator_ID=" + M_Locator_ID 
				+ ",M_Product_ID=" + M_Product_ID + ",ASI=" + M_AttributeSetInstance_ID);
			return false;
		}

		if(dateLastInventory != null)
			storage.updateDateLastInventory(dateLastInventory);
		storage.addQtyOnHand(diffQtyOnHand);
		if (s_log.isLoggable(Level.FINE)) {
			StringBuilder diffText = new StringBuilder("(OnHand=").append(diffQtyOnHand).append(") -> ").append(storage.toString());
			s_log.fine(diffText.toString());
		}
		return true;
	}	//	add

	/**
	 * Add addition to quantity on hand with direct SQL - not using cached value - solving IDEMPIERE-2629
	 * @param addition
	 */
	public void addQtyOnHand(BigDecimal addition) {
		final String sql = "UPDATE M_StorageOnHand SET QtyOnHand=QtyOnHand+?, Updated=getDate(), UpdatedBy=? " +
				"WHERE M_Product_ID=? AND M_Locator_ID=? AND M_AttributeSetInstance_ID=? AND DateMaterialPolicy=?";
		DB.executeUpdateEx(sql, 
			new Object[] {addition, Env.getAD_User_ID(Env.getCtx()), getM_Product_ID(), getM_Locator_ID(), getM_AttributeSetInstance_ID(), getDateMaterialPolicy()}, 
			get_TrxName());
		load(get_TrxName());
		if (getQtyOnHand().signum() == -1) {
			MWarehouse wh = MWarehouse.get(Env.getCtx(), getM_Warehouse_ID());
			if (wh.isDisallowNegativeInv()) {
				throw new NegativeInventoryDisallowedException(getCtx(), getM_Warehouse_ID(), getM_Product_ID(), getM_AttributeSetInstance_ID(), getM_Locator_ID(),
						getQtyOnHand().subtract(addition), addition.negate());
			}
		}
	}

	/**
	 * Update Date Last Inventory of this record with direct SQL
	 * @param dateLastInv
	 */
	public void updateDateLastInventory(Timestamp dateLastInv) {
		final String sql = "UPDATE M_StorageOnHand SET DateLastInventory=? " +
				"WHERE M_Product_ID=? AND M_Locator_ID=? AND M_AttributeSetInstance_ID=? AND DateMaterialPolicy=?";
		DB.executeUpdateEx(sql, 
			new Object[] {dateLastInv, getM_Product_ID(), getM_Locator_ID(), getM_AttributeSetInstance_ID(), getDateMaterialPolicy()}, 
			get_TrxName());
		load(get_TrxName());
	}
	
	/**
	 * 	Get Locator with highest Locator Priority and a sufficient OnHand Qty
	 * 	@param M_Warehouse_ID warehouse
	 * 	@param M_Product_ID product
	 * 	@param M_AttributeSetInstance_ID asi id, use negative value (for e.g -1) to match all asi including 0
	 * 	@param Qty qty
	 *	@param trxName transaction
	 * 	@return locator id (0 if no match found)
	 */
	public static int getM_Locator_ID (int M_Warehouse_ID, 
		int M_Product_ID, int M_AttributeSetInstance_ID, BigDecimal Qty,
		String trxName)
	{
		int M_Locator_ID = 0;
		int firstM_Locator_ID = 0;
		String sql = "SELECT s.M_Locator_ID, s.QtyOnHand "
			+ "FROM M_StorageOnHand s"
			+ " INNER JOIN M_Locator l ON (s.M_Locator_ID=l.M_Locator_ID)"
			+ " INNER JOIN M_Product p ON (s.M_Product_ID=p.M_Product_ID) ";
		if (M_AttributeSetInstance_ID >= 0)
			sql = sql + " LEFT OUTER JOIN M_AttributeSet mas ON (p.M_AttributeSet_ID=mas.M_AttributeSet_ID) ";
		sql = sql + "WHERE l.M_Warehouse_ID=? "
			+ " AND s.M_Product_ID=? ";
		if (M_AttributeSetInstance_ID >= 0)
			sql = sql + " AND (mas.IsInstanceAttribute IS NULL OR mas.IsInstanceAttribute='N' OR s.M_AttributeSetInstance_ID=?) ";
		sql = sql + " AND l.IsActive='Y' "
			+ "ORDER BY l.PriorityNo DESC, s.QtyOnHand DESC";
		
		PreparedStatement pstmt = null;
		ResultSet rs = null;
		try
		{
			pstmt = DB.prepareStatement(sql, trxName);
			pstmt.setInt(1, M_Warehouse_ID);
			pstmt.setInt(2, M_Product_ID);
			if (M_AttributeSetInstance_ID >= 0)
				pstmt.setInt(3, M_AttributeSetInstance_ID);
			rs = pstmt.executeQuery();
			while (rs.next())
			{
				BigDecimal QtyOnHand = rs.getBigDecimal(2);
				if (QtyOnHand != null && Qty.compareTo(QtyOnHand) <= 0)
				{
					M_Locator_ID = rs.getInt(1);
					break;
				}
				if (firstM_Locator_ID == 0)
					firstM_Locator_ID = rs.getInt(1);
			}
		}
		catch (SQLException ex)
		{
			s_log.log(Level.SEVERE, sql, ex);
		}
		finally
		{
			DB.close(rs, pstmt);
			rs = null; pstmt = null;
		}
		if (M_Locator_ID != 0)
			return M_Locator_ID;
		return firstM_Locator_ID;
	}	//	getM_Locator_ID
	
    /**
     * UUID based Constructor
     * @param ctx  Context
     * @param M_StorageOnHand_UU  UUID key
     * @param trxName Transaction
     */
    public MStorageOnHand(Properties ctx, String M_StorageOnHand_UU, String trxName) {
        super(ctx, M_StorageOnHand_UU, trxName);
		if (Util.isEmpty(M_StorageOnHand_UU))
			setInitialDefaults();
    }

	/**
	 *	@param ctx context
	 *	@param ignored ignored
	 *	@param trxName transaction
	 */
	public MStorageOnHand (Properties ctx, int ignored, String trxName)
	{
		super(ctx, 0, trxName);
		if (ignored != 0)
			throw new IllegalArgumentException("Multi-Key");
		setInitialDefaults();
	}	//	MStorageOnHand

	/**
	 * Set the initial defaults for a new record
	 */
	private void setInitialDefaults() {
		setQtyOnHand (Env.ZERO);
	}

	/**
	 * 	Load Constructor
	 *	@param ctx context
	 *	@param rs result set
	 *	@param trxName transaction
	 */
	public MStorageOnHand (Properties ctx, ResultSet rs, String trxName)
	{
		super(ctx, rs, trxName);
	}	//	MStorageOnHand

	/**
	 * 	NEW MStorageOnHand Constructor
	 *	@param locator (parent) locator
	 *	@param M_Product_ID product
	 *	@param M_AttributeSetInstance_ID attribute
	 *  @param dateMPolicy
	 */
	private MStorageOnHand (MLocator locator, int M_Product_ID, int M_AttributeSetInstance_ID, Timestamp dateMPolicy)
	{
		this (locator.getCtx(), 0, locator.get_TrxName());
		setClientOrg(locator);
		setM_Locator_ID (locator.getM_Locator_ID());
		setM_Product_ID (M_Product_ID);
		setM_AttributeSetInstance_ID (M_AttributeSetInstance_ID);
		dateMPolicy = Util.removeTime(dateMPolicy);
		setDateMaterialPolicy(dateMPolicy);
	}	//	MStorageOnHand

	/** Log								*/
	private static CLogger		s_log = CLogger.getCLogger (MStorageOnHand.class);
	/** Warehouse						*/
	private int		m_M_Warehouse_ID = 0;
	
	/**
	 * 	Get M_Warehouse_ID of Locator
	 *	@return warehouse
	 */
	public int getM_Warehouse_ID()
	{
		if (m_M_Warehouse_ID == 0)
		{
			MLocator loc = MLocator.get(getCtx(), getM_Locator_ID(), get_TrxName());
			m_M_Warehouse_ID = loc.getM_Warehouse_ID();
		}
		return m_M_Warehouse_ID;
	}	//	getM_Warehouse_ID
	
	@Override
	protected boolean beforeSave(boolean newRecord) 
	{
		//	Negative On Hand check
		if (newRecord || is_ValueChanged("QtyOnHand"))
		{
			MWarehouse wh = new MWarehouse(getCtx(), getM_Warehouse_ID(), get_TrxName());
			if (wh.isDisallowNegativeInv())
			{
				String sql = "SELECT SUM(QtyOnHand) "
					+ "FROM M_StorageOnHand s"
					+ " INNER JOIN M_Locator l ON (s.M_Locator_ID=l.M_Locator_ID) "
					+ "WHERE s.M_Product_ID=?"		//	#1
					+ " AND l.M_Warehouse_ID=?"
					+ " AND l.M_Locator_ID=?"
					+ " AND s.M_AttributeSetInstance_ID<>?";
				BigDecimal QtyOnHand = DB.getSQLValueBDEx(get_TrxName(), sql, new Object[] {getM_Product_ID(), getM_Warehouse_ID(), getM_Locator_ID(), getM_AttributeSetInstance_ID()});
				if (QtyOnHand == null)
					QtyOnHand = Env.ZERO;
				
				// Add on hand of this record
				QtyOnHand = QtyOnHand.add(getQtyOnHand());
				
				if (getQtyOnHand().compareTo(BigDecimal.ZERO) < 0 ||
						QtyOnHand.compareTo(Env.ZERO) < 0)
				{
					log.saveError("Error", new NegativeInventoryDisallowedException(getCtx(), getM_Warehouse_ID(), getM_Product_ID(), 
							getM_AttributeSetInstance_ID(), getM_Locator_ID(), QtyOnHand.subtract(getQtyOnHand()), getQtyOnHand().negate()));
					return false;
				}				
			}
		}

		return true;
	}
	
	/**
	 * Get Quantity On Hand of Warehouse
	 * @param M_Product_ID
	 * @param M_Warehouse_ID
	 * @param M_AttributeSetInstance_ID M_AttributeSetInstance_ID filter, ignore if 0
	 * @param trxName
	 * @return QtyOnHand
	 */
	public static BigDecimal getQtyOnHand(int M_Product_ID, int M_Warehouse_ID, int M_AttributeSetInstance_ID, String trxName) {
		StringBuilder sql = new StringBuilder();
		sql.append(" SELECT SUM(QtyOnHand) FROM M_StorageOnHand oh JOIN M_Locator loc ON (oh.M_Locator_ID=loc.M_Locator_ID)")
			.append(" WHERE oh.M_Product_ID=?")
			.append(" AND loc.M_Warehouse_ID=?");

		ArrayList<Object> params = new ArrayList<Object>();
		params.add(M_Product_ID);
		params.add(M_Warehouse_ID);

		// With ASI
		if (M_AttributeSetInstance_ID != 0) {
			sql.append(" AND oh.M_AttributeSetInstance_ID=?");
			params.add(M_AttributeSetInstance_ID);
		}

		BigDecimal qty = DB.getSQLValueBD(trxName, sql.toString(), params);
		if (qty == null)
			qty = Env.ZERO;

		return qty;
	}

	/**
	 * Get Quantity On Hand of Warehouse with ASI=0
	 * @param M_Product_ID
	 * @param M_Warehouse_ID
	 * @param trxName
	 * @return QtyOnHand
	 */
	public static BigDecimal getQtyOnHandWithASIZero(int M_Product_ID, int M_Warehouse_ID, String trxName) {
		StringBuilder sql = new StringBuilder();
		sql.append(" SELECT SUM(QtyOnHand) FROM M_StorageOnHand oh JOIN M_Locator loc ON (oh.M_Locator_ID=loc.M_Locator_ID)")
			.append(" WHERE oh.M_Product_ID=?")
			.append(" AND loc.M_Warehouse_ID=?")
			.append(" AND oh.M_AttributeSetInstance_ID=0");

		ArrayList<Object> params = new ArrayList<Object>();
		params.add(M_Product_ID);
		params.add(M_Warehouse_ID);

		BigDecimal qty = DB.getSQLValueBD(trxName, sql.toString(), params);
		if (qty == null)
			qty = Env.ZERO;

		return qty;
	}
		
	/**
	 * Get Quantity On Hand of Warehouse (only include Locator with Locator Type = Available for Reservation)
	 * @param M_Product_ID
	 * @param M_Warehouse_ID
	 * @param M_AttributeSetInstance_ID
	 * @param trxName
	 * @return QtyOnHand
	 */
	public static BigDecimal getQtyOnHandForReservation(int M_Product_ID, int M_Warehouse_ID, int M_AttributeSetInstance_ID, String trxName) {
		StringBuilder sql = new StringBuilder();
		sql.append(" SELECT SUM(QtyOnHand) FROM M_StorageOnHand oh"
				+ " JOIN M_Locator loc ON (oh.M_Locator_ID=loc.M_Locator_ID)"
				+ " LEFT JOIN M_LocatorType lt ON (loc.M_LocatorType_ID=lt.M_LocatorType_ID)")
			.append(" WHERE oh.M_Product_ID=?")
			.append(" AND loc.M_Warehouse_ID=? AND COALESCE(lt.IsAvailableForReservation,'Y')='Y'");

		ArrayList<Object> params = new ArrayList<Object>();
		params.add(M_Product_ID);
		params.add(M_Warehouse_ID);

		// With ASI
		if (M_AttributeSetInstance_ID != 0) {
			sql.append(" AND oh.M_AttributeSetInstance_ID=?");
			params.add(M_AttributeSetInstance_ID);
		}

		BigDecimal qty = DB.getSQLValueBDEx(trxName, sql.toString(), params);
		if (qty == null)
			qty = Env.ZERO;

		return qty;
	}

	/**
	 * Get Quantity On Hand of Warehouse with ASI=0 (only include Locator with Locator Type = Available for Reservation)
	 * @param M_Product_ID
	 * @param M_Warehouse_ID
	 * @param trxName
	 * @return QtyOnHand
	 */
	public static BigDecimal getQtyOnHandForReservationWithASIZero(int M_Product_ID, int M_Warehouse_ID, String trxName) {
		StringBuilder sql = new StringBuilder();
		sql.append(" SELECT SUM(QtyOnHand) FROM M_StorageOnHand oh"
				+ " JOIN M_Locator loc ON (oh.M_Locator_ID=loc.M_Locator_ID)"
				+ " LEFT JOIN M_LocatorType lt ON (loc.M_LocatorType_ID=lt.M_LocatorType_ID)")
			.append(" WHERE oh.M_Product_ID=?")
			.append(" AND loc.M_Warehouse_ID=? AND COALESCE(lt.IsAvailableForReservation,'Y')='Y'")
			.append(" AND oh.M_AttributeSetInstance_ID=0");

		ArrayList<Object> params = new ArrayList<Object>();
		params.add(M_Product_ID);
		params.add(M_Warehouse_ID);

		BigDecimal qty = DB.getSQLValueBDEx(trxName, sql.toString(), params);
		if (qty == null)
			qty = Env.ZERO;

		return qty;
	}
	
	/**
	 * Get Quantity On Hand of Warehouse (only include Locator with Locator Type = available for shipping)
	 * @param M_Product_ID
	 * @param M_Warehouse_ID
	 * @param M_AttributeSetInstance_ID
	 * @param trxName
	 * @return QtyOnHand
	 */
	public static BigDecimal getQtyOnHandForShipping(int M_Product_ID, int M_Warehouse_ID, int M_AttributeSetInstance_ID, String trxName) {
		StringBuilder sql = new StringBuilder();
		sql.append(" SELECT SUM(QtyOnHand) FROM M_StorageOnHand oh JOIN M_Locator loc ON (oh.M_Locator_ID=loc.M_Locator_ID)")
			.append(" LEFT JOIN M_LocatorType lt ON (loc.M_LocatorType_ID=lt.M_LocatorType_ID)")
			.append(" WHERE oh.M_Product_ID=?")
			.append(" AND loc.M_Warehouse_ID=? AND COALESCE(lt.IsAvailableForShipping,'Y')='Y'");

		ArrayList<Object> params = new ArrayList<Object>();
		params.add(M_Product_ID);
		params.add(M_Warehouse_ID);

		// With ASI
		if (M_AttributeSetInstance_ID != 0) {
			sql.append(" AND oh.M_AttributeSetInstance_ID=?");
			params.add(M_AttributeSetInstance_ID);
		}

		BigDecimal qty = DB.getSQLValueBDEx(trxName, sql.toString(), params);
		if (qty == null)
			qty = Env.ZERO;

		return qty;
	}
	
	/**
	 * Get Quantity On Hand of Warehouse with ASI=0 (only include Locator with Locator Type = available for shipping)
	 * @param M_Product_ID
	 * @param M_Warehouse_ID
	 * @param trxName
	 * @return QtyOnHand
	 */
	public static BigDecimal getQtyOnHandForShippingWithASIZero(int M_Product_ID, int M_Warehouse_ID, String trxName) {
		StringBuilder sql = new StringBuilder();
		sql.append(" SELECT SUM(QtyOnHand) FROM M_StorageOnHand oh JOIN M_Locator loc ON (oh.M_Locator_ID=loc.M_Locator_ID)")
			.append(" LEFT JOIN M_LocatorType lt ON (loc.M_LocatorType_ID=lt.M_LocatorType_ID)")
			.append(" WHERE oh.M_Product_ID=?")
			.append(" AND loc.M_Warehouse_ID=? AND COALESCE(lt.IsAvailableForShipping,'Y')='Y'")
			.append(" AND oh.M_AttributeSetInstance_ID=0");

		ArrayList<Object> params = new ArrayList<Object>();
		params.add(M_Product_ID);
		params.add(M_Warehouse_ID);

		BigDecimal qty = DB.getSQLValueBDEx(trxName, sql.toString(), params);
		if (qty == null)
			qty = Env.ZERO;

		return qty;
	}
	
	/**
	 * Get Quantity On Hand of Locator
	 * @param M_Product_ID
	 * @param M_Locator_ID
	 * @param M_AttributeSetInstance_ID
	 * @param trxName
	 * @return QtyOnHand
	 */
	public static BigDecimal getQtyOnHandForLocator(int M_Product_ID, int M_Locator_ID, int M_AttributeSetInstance_ID, String trxName) {
		StringBuilder sql = new StringBuilder();
		sql.append(" SELECT SUM(oh.QtyOnHand) FROM M_StorageOnHand oh")
			.append(" WHERE oh.M_Product_ID=?")
			.append(" AND oh.M_Locator_ID=?");

		ArrayList<Object> params = new ArrayList<Object>();
		params.add(M_Product_ID);
		params.add(M_Locator_ID);

		// With ASI
		if (M_AttributeSetInstance_ID != 0) {
			sql.append(" AND oh.M_AttributeSetInstance_ID=?");
			params.add(M_AttributeSetInstance_ID);
		}

		BigDecimal qty = DB.getSQLValueBD(trxName, sql.toString(), params);
		if (qty == null)
			qty = Env.ZERO;

		return qty;
	}
	
	/**
	 * Get Quantity On Hand of Locator with ASI=0
	 * @param M_Product_ID
	 * @param M_Locator_ID
	 * @param trxName
	 * @return QtyOnHand
	 */
	public static BigDecimal getQtyOnHandForLocatorWithASIZero(int M_Product_ID, int M_Locator_ID, String trxName) {
		StringBuilder sql = new StringBuilder();
		sql.append(" SELECT SUM(oh.QtyOnHand) FROM M_StorageOnHand oh")
			.append(" WHERE oh.M_Product_ID=?")
			.append(" AND oh.M_Locator_ID=?")
			.append(" AND oh.M_AttributeSetInstance_ID=0");

		ArrayList<Object> params = new ArrayList<Object>();
		params.add(M_Product_ID);
		params.add(M_Locator_ID);

		BigDecimal qty = DB.getSQLValueBD(trxName, sql.toString(), params);
		if (qty == null)
			qty = Env.ZERO;

		return qty;
	}
	
	/**
	 *	String Representation
	 * 	@return info
	 */
	@Override
	public String toString()
	{
		StringBuilder sb = new StringBuilder("MStorageOnHand[")
			.append("M_Locator_ID=").append(getM_Locator_ID())
			.append(",M_Product_ID=").append(getM_Product_ID())
			.append(",M_AttributeSetInstance_ID=").append(getM_AttributeSetInstance_ID())
			.append(",DateMaterialPolicy=").append(getDateMaterialPolicy())
			.append(": OnHand=").append(getQtyOnHand())
			.append("]");
		return sb.toString();
	}	//	toString

	/**
	 * Get DateMaterialPolicy ORDER BY QtyOnHand DESC
	 * @param M_Product_ID
	 * @param M_AttributeSetInstance_ID
	 * @param trxName
	 * @return DateMaterialPolicy time stamp
	 */
	public static Timestamp getDateMaterialPolicy(int M_Product_ID, int M_AttributeSetInstance_ID,String trxName){
		
		if (M_Product_ID <= 0  || M_AttributeSetInstance_ID <= 0)
			return null;
		
		String sql = "SELECT dateMaterialPolicy FROM M_StorageOnHand WHERE M_Product_ID=? and M_AttributeSetInstance_ID=? ORDER BY QtyOnHand DESC";
		
		PreparedStatement pstmt = null;
		ResultSet rs = null;
		try
		{
			pstmt = DB.prepareStatement(sql, trxName);
			pstmt.setInt(1, M_Product_ID);
			pstmt.setInt(2, M_AttributeSetInstance_ID);
			
			rs = pstmt.executeQuery();
			if (rs.next())
			{
				return rs.getTimestamp(1);
			}
		}catch (SQLException ex)
		{
			s_log.log(Level.SEVERE, sql, ex);
			
		}finally
		{
			DB.close(rs, pstmt);
			rs = null; pstmt = null;
		}
		
		
		return null;
	}  //getDateMaterialPolicy
	
	/**
	 * Get DateMaterialPolicy ORDER BY QtyOnHand DESC
	 * @param M_Product_ID
	 * @param M_AttributeSetInstance_ID
	 * @param M_Locator_ID
	 * @param trxName
	 * @return DateMaterialPolicy time stamp
	 */
	public static Timestamp getDateMaterialPolicy(int M_Product_ID, int M_AttributeSetInstance_ID, int M_Locator_ID, String trxName) {
		
		if (M_Product_ID <= 0  || M_AttributeSetInstance_ID <= 0)
			return null;
		
		String sql = "SELECT dateMaterialPolicy FROM M_StorageOnHand WHERE M_Product_ID=? and M_AttributeSetInstance_ID=? AND M_Locator_ID=? ORDER BY QtyOnHand DESC";
		
		PreparedStatement pstmt = null;
		ResultSet rs = null;
		try
		{
			pstmt = DB.prepareStatement(sql, trxName);
			pstmt.setInt(1, M_Product_ID);
			pstmt.setInt(2, M_AttributeSetInstance_ID);
			pstmt.setInt(3, M_Locator_ID);
			
			rs = pstmt.executeQuery();
			if (rs.next())
			{
				return rs.getTimestamp(1);
			}
		} catch (SQLException ex)
		{
			s_log.log(Level.SEVERE, sql, ex);
			
		}finally
		{
			DB.close(rs, pstmt);
			rs = null; pstmt = null;
		}
		
		
		return null;
	}  //getDateMaterialPolicy
}	//	MStorageOnHand
