- /*
- * Copyright 2004 The Apache Software Foundation.
- *
- * 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.apache.commons.beanutils;
-
- import org.apache.commons.collections.Predicate;
- import org.apache.commons.logging.Log;
- import org.apache.commons.logging.LogFactory;
-
- import java.lang.reflect.InvocationTargetException;
-
- /**
- * <p>Predicate implementation that applies the given <code>Predicate</code>
- * to the result of calling the given property getter.
- * </p>
- */
- public class BeanPredicate implements Predicate {
-
- private final Log log = LogFactory.getLog(this.getClass());
-
- /** Name of the property whose value will be predicated */
- private String propertyName;
- /** <code>Predicate</code> to be applied to the property value */
- private Predicate predicate;
-
- /**
- * Constructs a <code>BeanPredicate</code> that applies the given
- * <code>Predicate</code> to the named property value.
- * @param propertyName the name of the property whose value is to be predicated,
- * not null
- * @param predicate the <code>Predicate</code> to be applied,
- * not null
- */
- public BeanPredicate(String propertyName, Predicate predicate) {
- this.propertyName = propertyName;
- this.predicate = predicate;
- }
-
- /**
- * Evaluates the given object by applying the {@link #getPredicate()}
- * to a property value named by {@link #getPropertyName()}.
- * @throws IllegalAccessException when the property cannot be evaluated
- */
- public boolean evaluate(Object object) {
-
- boolean evaluation = false;
-
- try {
- Object propValue = PropertyUtils.getProperty( object, propertyName );
- evaluation = predicate.evaluate(propValue);
- } catch (IllegalArgumentException e) {
- final String errorMsg = "Problem during evaluation.";
- log.error("ERROR: " + errorMsg, e);
- throw e;
- } catch (IllegalAccessException e) {
- final String errorMsg = "Unable to access the property provided.";
- log.error(errorMsg, e);
- throw new IllegalArgumentException(errorMsg);
- } catch (InvocationTargetException e) {
- final String errorMsg = "Exception occurred in property's getter";
- log.error(errorMsg, e);
- throw new IllegalArgumentException(errorMsg);
- } catch (NoSuchMethodException e) {
- final String errorMsg = "Property not found.";
- log.error(errorMsg, e);
- throw new IllegalArgumentException(errorMsg);
- }
-
- return evaluation;
- }
-
- /**
- * Gets the name of the property whose value is to be predicated.
- * in the evaluation.
- * @return the property name, not null
- */
- public String getPropertyName() {
- return propertyName;
- }
-
- /**
- * Sets the name of the property whose value is to be predicated.
- * @param propertyName the name of the property whose value is to be predicated,
- * not null
- */
- public void setPropertyName(String propertyName) {
- this.propertyName = propertyName;
- }
-
- /**
- * Gets the <code>Predicate</code> to be applied to the value of the named property
- * during {@link #evaluate}.
- * @return <code>Predicate</code>, not null
- */
- public Predicate getPredicate() {
- return predicate;
- }
-
- /**
- * Sets the <code>Predicate</code> to be applied to the value of the named property
- * during {@link evaluate}.
- * @param predicate <code>Predicate</code>, not null
- */
- public void setPredicate(Predicate predicate) {
- this.predicate = predicate;
- }
-
- }