com.hazelcast.query.impl.getters.FieldGetter Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2020, Hazelcast, Inc. 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.
*/
package com.hazelcast.query.impl.getters;
import java.lang.reflect.Field;
public final class FieldGetter extends AbstractMultiValueGetter {
private final Field field;
// for testing purposes only
public FieldGetter(Getter parent, Field field, String modifier, Class elementType) {
this(parent, field, modifier, field.getType(), elementType);
}
public FieldGetter(Getter parent, Field field, String modifier, Class type, Class elementType) {
super(parent, modifier, type, elementType);
this.field = field;
}
@Override
protected Object extractFrom(Object object) throws IllegalAccessException {
try {
return field.get(object);
} catch (IllegalArgumentException e) {
throw new IllegalArgumentException(composeAttributeValueExtractionFailedMessage(field), e);
}
}
@Override
boolean isCacheable() {
return true;
}
@Override
public String toString() {
return "FieldGetter [parent=" + parent + ", field=" + field + ", modifier = " + getModifier() + "]";
}
}