/**
* Copyright 2010 JBoss Inc
*
* 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.
*/
package org.drools.facttemplates;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.lang.reflect.Method;
import java.math.BigDecimal;
import java.math.BigInteger;
import org.drools.RuntimeDroolsException;
import org.drools.base.ValueType;
import org.drools.common.InternalWorkingMemory;
import org.drools.core.util.ClassUtils;
import org.drools.core.util.MathUtils;
public class FactTemplateFieldExtractor
implements
Externalizable,
org.drools.spi.InternalReadAccessor {
private static final long serialVersionUID = 510l;
private FactTemplate factTemplate;
private int fieldIndex;
public FactTemplateFieldExtractor() {
}
public FactTemplateFieldExtractor(final FactTemplate factTemplate,
final int fieldIndex) {
this.factTemplate = factTemplate;
this.fieldIndex = fieldIndex;
}
public void readExternal(ObjectInput in) throws IOException,
ClassNotFoundException {
factTemplate = (FactTemplate) in.readObject();
fieldIndex = in.readInt();
}
public void writeExternal(ObjectOutput out) throws IOException {
out.writeObject( factTemplate );
out.writeInt( fieldIndex );
}
public ValueType getValueType() {
return this.factTemplate.getFieldTemplate( this.fieldIndex ).getValueType();
}
public Object getValue(InternalWorkingMemory workingMemory,
final Object object) {
return ((Fact) object).getFieldValue( this.fieldIndex );
}
public int getIndex() {
return this.fieldIndex;
}
public Class getExtractToClass() {
return this.factTemplate.getFieldTemplate( fieldIndex ).getValueType().getClassType();
}
public String getExtractToClassName() {
return ClassUtils.canonicalName( getExtractToClass() );
}
public boolean getBooleanValue(InternalWorkingMemory workingMemory,
final Object object) {
return ((Boolean) ((Fact) object).getFieldValue( this.fieldIndex )).booleanValue();
}
public byte getByteValue(InternalWorkingMemory workingMemory,
final Object object) {
return ((Number) ((Fact) object).getFieldValue( this.fieldIndex )).byteValue();
}
public char getCharValue(InternalWorkingMemory workingMemory,
final Object object) {
return ((Character) ((Fact) object).getFieldValue( this.fieldIndex )).charValue();
}
public double getDoubleValue(InternalWorkingMemory workingMemory,
final Object object) {
return ((Number) ((Fact) object).getFieldValue( this.fieldIndex )).doubleValue();
}
public float getFloatValue(InternalWorkingMemory workingMemory,
final Object object) {
return ((Number) ((Fact) object).getFieldValue( this.fieldIndex )).floatValue();
}
public int getIntValue(InternalWorkingMemory workingMemory,
final Object object) {
return ((Number) ((Fact) object).getFieldValue( this.fieldIndex )).intValue();
}
public long getLongValue(InternalWorkingMemory workingMemory,
final Object object) {
return ((Number) ((Fact) object).getFieldValue( this.fieldIndex )).longValue();
}
public short getShortValue(InternalWorkingMemory workingMemory,
final Object object) {
return ((Number) ((Fact) object).getFieldValue( this.fieldIndex )).shortValue();
}
public Method getNativeReadMethod() {
try {
return this.getClass().getDeclaredMethod( "getValue",
new Class[]{InternalWorkingMemory.class, Object.class} );
} catch ( final Exception e ) {
throw new RuntimeDroolsException( "This is a bug. Please report to development team: " + e.getMessage(),
e );
}
}
public int getHashCode(InternalWorkingMemory workingMemory,
final Object object) {
return getValue( workingMemory,
object ).hashCode();
}
public boolean isGlobal() {
return false;
}
public boolean isSelfReference() {
return false;
}
public boolean isNullValue(InternalWorkingMemory workingMemory,
Object object) {
return ((Fact) object).getFieldValue( this.fieldIndex ) == null;
}
public boolean getBooleanValue(Object object) {
return getBooleanValue( null,
object );
}
public byte getByteValue(Object object) {
return getByteValue( null,
object );
}
public char getCharValue(Object object) {
return getCharValue( null,
object );
}
public double getDoubleValue(Object object) {
return getDoubleValue( null,
object );
}
public float getFloatValue(Object object) {
return getFloatValue( null,
object );
}
public int getHashCode(Object object) {
return getHashCode( null,
object );
}
public int getIntValue(Object object) {
return getIntValue( null,
object );
}
public long getLongValue(Object object) {
return getLongValue( null,
object );
}
public short getShortValue(Object object) {
return getShortValue( null,
object );
}
public Object getValue(Object object) {
return getValue( null,
object );
}
public BigDecimal getBigDecimalValue(Object object) {
return getBigDecimalValue( null,
object );
}
public BigInteger getBigIntegerValue(Object object) {
return getBigIntegerValue( null,
object );
}
public BigDecimal getBigDecimalValue(InternalWorkingMemory workingMemory,
Object object) {
return MathUtils.getBigDecimal( getValue( workingMemory,
object ) );
}
public BigInteger getBigIntegerValue(InternalWorkingMemory workingMemory,
Object object) {
return MathUtils.getBigInteger( getValue( workingMemory,
object ) );
}
public boolean isNullValue(Object object) {
return isNullValue( null,
object );
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((factTemplate == null) ? 0 : factTemplate.hashCode());
result = prime * result + fieldIndex;
return result;
}
@Override
public boolean equals(Object obj) {
if ( this == obj ) return true;
if ( obj == null ) return false;
if ( getClass() != obj.getClass() ) return false;
FactTemplateFieldExtractor other = (FactTemplateFieldExtractor) obj;
if ( factTemplate == null ) {
if ( other.factTemplate != null ) return false;
} else if ( !factTemplate.equals( other.factTemplate ) ) {
return false;
}
if ( fieldIndex != other.fieldIndex ) {
return false;
}
return true;
}
}