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

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

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/*
 * Copyright (c) 2010-2015 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.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.schema.result.OperationResult;
import com.evolveum.midpoint.task.api.Task;
import com.evolveum.midpoint.util.exception.SchemaException;
import com.evolveum.midpoint.xml.ns._public.common.common_3.AsIsExpressionEvaluatorType;
import com.evolveum.midpoint.xml.ns._public.common.common_3.ObjectFactory;
import org.apache.commons.lang.Validate;

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

    private PrismContext prismContext;
    private Protector protector;

    public AsIsExpressionEvaluatorFactory(PrismContext prismContext, Protector protector) {
        super();
        this.prismContext = prismContext;
        this.protector = protector;
    }

    /* (non-Javadoc)
     * @see com.evolveum.midpoint.common.expression.ExpressionEvaluatorFactory#getElementName()
     */
    @Override
    public QName getElementName() {
        return new ObjectFactory().createAsIs(new AsIsExpressionEvaluatorType()).getName();
    }

    /* (non-Javadoc)
     * @see com.evolveum.midpoint.common.expression.ExpressionEvaluatorFactory#createEvaluator(javax.xml.bind.JAXBElement)
     */
    @Override
    public <V extends PrismValue, D extends ItemDefinition> AsIsExpressionEvaluator<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 asIs expression evaluator");

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

        Object evaluatorTypeObject = null;
        if (evaluatorElement != null) {
            evaluatorTypeObject = evaluatorElement.getValue();
        }
        if (evaluatorTypeObject != null && !(evaluatorTypeObject instanceof AsIsExpressionEvaluatorType)) {
            throw new SchemaException("AsIs value constructor cannot handle elements of type "
                    + evaluatorTypeObject.getClass().getName() + " in " + contextDescription);
        }
        return new AsIsExpressionEvaluator<V, D>((AsIsExpressionEvaluatorType) evaluatorTypeObject,
                outputDefinition, protector, prismContext);
    }

}