/**********************************************************************
Copyright (c) 2004 Erik Bengtson and others. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
Contributors:
2004 Andy Jefferson - localised messages
...
**********************************************************************/
package org.jpox.store.rdbms.mapping;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import org.jpox.ClassNameConstants;
import org.jpox.exceptions.JPOXDataStoreException;
import org.jpox.store.exceptions.NullValueException;
import org.jpox.store.mapped.DatastoreField;
import org.jpox.store.mapped.MappedStoreManager;
import org.jpox.store.mapped.mapping.JavaTypeMapping;
import org.jpox.store.rdbms.Column;
import org.jpox.store.rdbms.typeinfo.TypeInfo;
/**
* Mapping of a Decimal RDBMS type.
*
* @version $Revision: 1.19 $
*/
public class DecimalRDBMSMapping extends ColumnMapping
{
private static final int INT_MAX_DECIMAL_DIGITS = 10;
private static final int LONG_MAX_DECIMAL_DIGITS = 19;
/**
* @param storeMgr Store Manager
* @param mapping The java type mapping
*/
protected DecimalRDBMSMapping(MappedStoreManager storeMgr, JavaTypeMapping mapping)
{
super(storeMgr, mapping);
}
/**
* Constructor.
* @param mapping Java type mapping
* @param storeMgr Store Manager
* @param field Field to be mapped
*/
public DecimalRDBMSMapping(JavaTypeMapping mapping, MappedStoreManager storeMgr, DatastoreField field)
{
super(storeMgr, mapping);
column = (Column) field;
initialize();
}
/**
* Initialise the mapping, setting any default precision.
*/
private void initialize()
{
// If the column has no precision specified, set its size.
// If the user has already set their precision we do nothing here since they
// want to control it.
if (column != null && column.getColumnMetaData().getLength() == null)
{
// In case the default DECIMAL precision is less than the number of
// digits we need, set it manually
if (getJavaTypeMapping().getJavaType().getName().equals(ClassNameConstants.JAVA_LANG_INTEGER))
{
column.getColumnMetaData().setLength(INT_MAX_DECIMAL_DIGITS);
column.checkDecimal();
}
else
{
column.getColumnMetaData().setLength(Math.min(getTypeInfo().precision, LONG_MAX_DECIMAL_DIGITS));
column.checkDecimal();
}
}
initTypeInfo();
}
/**
* Accessor for whether the mapping is decimal-based.
* @return Whether the mapping is decimal based
*/
public boolean isDecimalBased()
{
return true;
}
/**
* Accessor for whether the mapping is integer-based.
* @return Whether the mapping is integer based
*/
public boolean isIntegerBased()
{
return false;
}
/**
* Accessor for whether the mapping is string-based.
* @return Whether the mapping is string based
*/
public boolean isStringBased()
{
return false;
}
public TypeInfo getTypeInfo()
{
return getDatabaseAdapter().getTypeInfo(Types.DECIMAL);
}
public void setDouble(Object ps, int param, double value)
{
try
{
((PreparedStatement) ps).setDouble(param, value);
}
catch (SQLException e)
{
throw new JPOXDataStoreException(LOCALISER.msg("055001","double","" + value, column, e.getMessage()), e);
}
}
public void setFloat(Object ps, int param, float value)
{
try
{
((PreparedStatement) ps).setDouble(param, value);
}
catch (SQLException e)
{
throw new JPOXDataStoreException(LOCALISER.msg("055002","float","" + value, column, e.getMessage()), e);
}
}
public void setInt(Object ps, int param, int value)
{
try
{
((PreparedStatement) ps).setInt(param, value);
}
catch (SQLException e)
{
throw new JPOXDataStoreException(LOCALISER.msg("055001","int","" + value, column, e.getMessage()), e);
}
}
public double getDouble(Object rs, int param)
{
double value;
try
{
value = ((ResultSet) rs).getDouble(param);
if( column == null || column.getColumnMetaData() == null || !column.getColumnMetaData().isAllowsNull() )
{
if (((ResultSet) rs).wasNull())
{
throw new NullValueException(LOCALISER.msg("055003",column));
}
}
}
catch (SQLException e)
{
throw new JPOXDataStoreException(LOCALISER.msg("055002","double","" + param, column, e.getMessage()), e);
}
return value;
}
public float getFloat(Object rs, int param)
{
float value;
try
{
value = (float) ((ResultSet) rs).getDouble(param);
if( column == null || column.getColumnMetaData() == null || !column.getColumnMetaData().isAllowsNull() )
{
if (((ResultSet) rs).wasNull())
{
throw new NullValueException(LOCALISER.msg("055003",column));
}
}
}
catch (SQLException e)
{
throw new JPOXDataStoreException(LOCALISER.msg("055001","float","" + param, column, e.getMessage()), e);
}
return value;
}
public int getInt(Object rs, int param)
{
int value;
try
{
value = ((ResultSet) rs).getInt(param);
if( column == null || column.getColumnMetaData() == null || !column.getColumnMetaData().isAllowsNull() )
{
if (((ResultSet) rs).wasNull())
{
throw new NullValueException(LOCALISER.msg("055003",column));
}
}
}
catch (SQLException e)
{
throw new JPOXDataStoreException(LOCALISER.msg("055002","int","" + param, column, e.getMessage()), e);
}
return value;
}
public void setLong(Object ps, int param, long value)
{
try
{
((PreparedStatement) ps).setLong(param, value);
}
catch (SQLException e)
{
throw new JPOXDataStoreException(LOCALISER.msg("055001","long","" + value, column,e.getMessage()), e);
}
}
public long getLong(Object rs, int param)
{
long value;
try
{
value = ((ResultSet) rs).getLong(param);
if( column == null || column.getColumnMetaData() == null || !column.getColumnMetaData().isAllowsNull() )
{
if (((ResultSet) rs).wasNull())
{
throw new NullValueException(LOCALISER.msg("055003",column));
}
}
}
catch (SQLException e)
{
throw new JPOXDataStoreException(LOCALISER.msg("055002","long","" + param, column, e.getMessage()), e);
}
return value;
}
public void setObject(Object ps, int param, Object value)
{
try
{
if (value == null)
{
if (column.isDefaultable() && column.getDefaultValue() != null)
{
((PreparedStatement) ps).setInt(param, Integer.valueOf(column.getDefaultValue().toString()).intValue());
}
else
{
((PreparedStatement) ps).setNull(param, getTypeInfo().dataType);
}
}
else
{
if( value instanceof Integer)
{
((PreparedStatement) ps).setBigDecimal(param, new BigDecimal(((Integer)value).intValue()));
}
else if( value instanceof Long)
{
((PreparedStatement) ps).setBigDecimal(param, new BigDecimal(((Long)value).longValue()));
}
else if( value instanceof BigDecimal)
{
((PreparedStatement) ps).setBigDecimal(param, (BigDecimal)value);
}
else if( value instanceof Float )
{
((PreparedStatement) ps).setDouble(param, ((Float)value).doubleValue());
}
else if( value instanceof Double )
{
((PreparedStatement) ps).setDouble(param, ((Double)value).doubleValue());
}
else if( value instanceof BigInteger)
{
((PreparedStatement) ps).setBigDecimal(param, new BigDecimal((BigInteger)value));
}
else
{
((PreparedStatement) ps).setInt(param, ((Integer)value).intValue());
}
}
}
catch (SQLException e)
{
throw new JPOXDataStoreException(LOCALISER.msg("055001","Object","" + value, column, e.getMessage()), e);
}
}
public Object getObject(Object rs, int param)
{
Object value;
try
{
if (getJavaTypeMapping().getJavaType().getName().equals(ClassNameConstants.JAVA_LANG_INTEGER))
{
value = ((ResultSet) rs).getBigDecimal(param);
value = value == null ? null : new Integer(((BigDecimal)value).toBigInteger().intValue());
}
else if (getJavaTypeMapping().getJavaType().getName().equals(ClassNameConstants.JAVA_LANG_LONG))
{
value = ((ResultSet) rs).getBigDecimal(param);
value = value == null ? null : new Long(((BigDecimal)value).toBigInteger().longValue());
}
else if (getJavaTypeMapping().getJavaType().getName().equals(ClassNameConstants.JAVA_MATH_BIGINTEGER))
{
value = ((ResultSet) rs).getBigDecimal(param);
value = value == null ? null : ((BigDecimal)value).toBigInteger();
}
else if (getJavaTypeMapping().getJavaType().getName().equals(ClassNameConstants.JAVA_MATH_BIGDECIMAL))
{
value = ((ResultSet) rs).getBigDecimal(param);
}
else if (getJavaTypeMapping().getJavaType().getName().equals(ClassNameConstants.JAVA_LANG_FLOAT))
{
double d = ((ResultSet) rs).getDouble(param);
value = ((ResultSet) rs).wasNull() ? null : new Float(d);
}
else if (getJavaTypeMapping().getJavaType().getName().equals(ClassNameConstants.JAVA_LANG_DOUBLE))
{
double d = ((ResultSet) rs).getDouble(param);
value = ((ResultSet) rs).wasNull() ? null : new Double(d);
}
else
{
int i = ((ResultSet) rs).getInt(param);
value = ((ResultSet) rs).wasNull() ? null : new Integer(i);
}
}
catch (SQLException e)
{
throw new JPOXDataStoreException(LOCALISER.msg("055002","Object","" + param, column, e.getMessage()), e);
}
return value;
}
}