/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.syncope.core.persistence.beans;
import java.util.Collection;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.MappedSuperclass;
import org.apache.commons.jexl2.JexlContext;
import org.apache.commons.jexl2.MapContext;
import org.apache.syncope.core.util.ApplicationContextProvider;
import org.apache.syncope.core.util.JexlUtil;
import org.springframework.context.ConfigurableApplicationContext;
@MappedSuperclass
public abstract class AbstractDerAttr extends AbstractBaseBean {
private static final long serialVersionUID = 4740924251090424771L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
protected Long id;
public Long getId() {
return id;
}
/**
* @see http://commons.apache.org/jexl/reference/index.html
* @param attributes the set of attributes against which evaluate this derived attribute
* @return the value of this derived attribute
*/
public String getValue(final Collection<? extends AbstractAttr> attributes) {
final ConfigurableApplicationContext context = ApplicationContextProvider.getApplicationContext();
final JexlUtil jexlUtil = context.getBean(JexlUtil.class);
// Prepare context using user attributes
final JexlContext jexlContext = new MapContext();
jexlUtil.addAttrsToContext(attributes, jexlContext);
jexlUtil.addFieldsToContext(getOwner(), jexlContext);
// Evaluate expression using the context prepared before
return jexlUtil.evaluate(getDerivedSchema().getExpression(), jexlContext);
}
public abstract <T extends AbstractAttributable> T getOwner();
public abstract <T extends AbstractAttributable> void setOwner(T owner);
public abstract <T extends AbstractDerSchema> T getDerivedSchema();
public abstract <T extends AbstractDerSchema> void setDerivedSchema(T derivedSchema);
}