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/*
* Copyright 2010 Red Hat, Inc. and/or its affiliates.
*
* 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.core.base.extractors;
import org.drools.core.base.BaseClassFieldReader;
import org.drools.core.base.ValueType;
import org.drools.core.common.InternalWorkingMemory;
import java.lang.reflect.Method;
public abstract class BaseObjectClassFieldReader extends BaseClassFieldReader {
private static final long serialVersionUID = 510l;
public BaseObjectClassFieldReader() {
}
protected BaseObjectClassFieldReader(final int index,
final Class< ? > fieldType,
final ValueType valueType) {
super( index,
fieldType,
valueType );
}
public abstract Object getValue(InternalWorkingMemory workingMemory,
Object object);
public boolean getBooleanValue(InternalWorkingMemory workingMemory,
final Object object) {
final Object value = getValue( workingMemory,
object );
if ( value instanceof Boolean ) {
return ((Boolean) value).booleanValue();
}
throw new RuntimeException( "Conversion to boolean not supported from " + getExtractToClass().getName() );
}
public byte getByteValue(InternalWorkingMemory workingMemory,
final Object object) {
final Object value = getValue( workingMemory,
object );
if ( value instanceof Character ) {
return (byte) ((Character) value).charValue();
}
throw new RuntimeException( "Conversion to byte not supported from " + getExtractToClass().getName());
}
public char getCharValue(InternalWorkingMemory workingMemory,
final Object object) {
final Object value = getValue( workingMemory,
object );
if ( value instanceof Character ) {
return ((Character) value).charValue();
}
throw new RuntimeException( "Conversion to char not supported from " + getExtractToClass().getName() );
}
public double getDoubleValue(InternalWorkingMemory workingMemory,
final Object object) {
final Object value = getValue( workingMemory,
object );
if( value instanceof Character ) {
return ((Character) value).charValue();
} else if ( value instanceof Number ) {
return ((Number) value).doubleValue();
}
throw new RuntimeException( "Conversion to double not supported from " + getExtractToClass().getName() );
}
public float getFloatValue(InternalWorkingMemory workingMemory,
final Object object) {
final Object value = getValue( workingMemory,
object );
if( value instanceof Character ) {
return ((Character) value).charValue();
} else if ( value instanceof Number ) {
return ((Number) value).floatValue();
}
throw new RuntimeException( "Conversion to float not supported from " + getExtractToClass().getName() );
}
public int getIntValue(InternalWorkingMemory workingMemory,
final Object object) {
final Object value = getValue( workingMemory,
object );
if( value instanceof Character ) {
return ((Character) value).charValue();
} else if ( value instanceof Number ) {
return ((Number) value).intValue();
}
throw new RuntimeException( "Conversion to int not supported from " + getExtractToClass().getName() );
}
public long getLongValue(InternalWorkingMemory workingMemory,
final Object object) {
final Object value = getValue( workingMemory,
object );
if( value instanceof Character ) {
return ((Character) value).charValue();
} else if ( value instanceof Number ) {
return ((Number) value).longValue();
}
throw new RuntimeException( "Conversion to long not supported from " + getExtractToClass().getName() );
}
public short getShortValue(InternalWorkingMemory workingMemory,
final Object object) {
final Object value = getValue( workingMemory,
object );
if( value instanceof Character ) {
return (short) ((Character) value).charValue();
} else if ( value instanceof Number ) {
return ((Number) value).shortValue();
}
throw new RuntimeException( "Conversion to short not supported from " + getExtractToClass().getName() );
}
public boolean isNullValue(InternalWorkingMemory workingMemory,
final Object object) {
if ( object == null ) {
return true;
} else {
return getValue( workingMemory,
object ) == null;
}
}
public Method getNativeReadMethod() {
try {
return this.getClass().getMethod( getNativeReadMethodName(),
new Class[]{InternalWorkingMemory.class, Object.class} );
} catch ( final Exception e ) {
throw new RuntimeException( "This is a bug. Please report to development team: " + e.getMessage(),
e );
}
}
public String getNativeReadMethodName() {
Class type = getExtractToClass();
if (!type.isPrimitive()) {
return "getValue";
}
return "get" + type.getName().substring(0, 1).toUpperCase() + type.getName().substring(1) + "Value";
}
public int getHashCode(InternalWorkingMemory workingMemory,
final Object object) {
final Object value = getValue( workingMemory,
object );
return (value != null) ? value.hashCode() : 0;
}
}
