com.evolveum.midpoint.model.common.expression.evaluator.PathExpressionEvaluatorFactory.java Source code

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Here is the source code for com.evolveum.midpoint.model.common.expression.evaluator.PathExpressionEvaluatorFactory.java

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/*
 * Copyright (c) 2010-2013 Evolveum
 *
 * 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.evolveum.midpoint.model.common.expression.evaluator;

import java.util.Collection;

import javax.xml.bind.JAXBElement;
import javax.xml.namespace.QName;

import com.evolveum.midpoint.task.api.Task;
import org.apache.commons.lang.Validate;

import com.evolveum.midpoint.model.common.expression.ExpressionEvaluator;
import com.evolveum.midpoint.model.common.expression.ExpressionEvaluatorFactory;
import com.evolveum.midpoint.prism.ItemDefinition;
import com.evolveum.midpoint.prism.PrismContext;
import com.evolveum.midpoint.prism.PrismValue;
import com.evolveum.midpoint.prism.crypto.Protector;
import com.evolveum.midpoint.prism.path.ItemPath;
import com.evolveum.midpoint.schema.result.OperationResult;
import com.evolveum.midpoint.schema.util.ObjectResolver;
import com.evolveum.midpoint.util.exception.SchemaException;
import com.evolveum.midpoint.xml.ns._public.common.common_3.ObjectFactory;
import com.evolveum.prism.xml.ns._public.types_3.ItemPathType;

/**
 * @author semancik
 *
 */
public class PathExpressionEvaluatorFactory implements ExpressionEvaluatorFactory {

    private PrismContext prismContext;
    private ObjectResolver objectResolver;
    private Protector protector;

    public PathExpressionEvaluatorFactory(PrismContext prismContext, ObjectResolver objectResolver,
            Protector protector) {
        super();
        this.prismContext = prismContext;
        this.objectResolver = objectResolver;
        this.protector = protector;
    }

    @Override
    public QName getElementName() {
        return new ObjectFactory().createPath(null).getName();
    }

    /* (non-Javadoc)
     * @see com.evolveum.midpoint.common.expression.ExpressionEvaluatorFactory#createEvaluator(javax.xml.bind.JAXBElement, com.evolveum.midpoint.prism.ItemDefinition, com.evolveum.midpoint.prism.PrismContext)
     */
    @Override
    public <V extends PrismValue, D extends ItemDefinition> ExpressionEvaluator<V, D> createEvaluator(
            Collection<JAXBElement<?>> evaluatorElements, D outputDefinition, String contextDescription, Task task,
            OperationResult result) throws SchemaException {

        Validate.notNull(outputDefinition, "output definition must be specified for path expression evaluator");

        if (evaluatorElements.size() > 1) {
            throw new SchemaException("More than one evaluator specified in " + contextDescription);
        }
        JAXBElement<?> evaluatorElement = evaluatorElements.iterator().next();

        Object evaluatorElementObject = evaluatorElement.getValue();
        if (!(evaluatorElementObject instanceof ItemPathType)) {
            throw new IllegalArgumentException("Path expression cannot handle elements of type "
                    + evaluatorElementObject.getClass().getName() + " in " + contextDescription);
        }
        //        if (!(evaluatorElementObject instanceof Element)) {
        //            throw new IllegalArgumentException("Path expression cannot handle elements of type " 
        //                  + evaluatorElementObject.getClass().getName()+" in "+contextDescription);
        //        }

        //        XPathHolder xpath = new XPathHolder((Element)evaluatorElementObject);
        ItemPath path = ((ItemPathType) evaluatorElementObject).getItemPath();

        return new PathExpressionEvaluator<>(path, objectResolver, outputDefinition, protector, prismContext);

    }

}