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

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

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/*
 * Copyright (c) 2010-2017 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.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.repo.common.expression.AbstractObjectResolvableExpressionEvaluatorFactory;
import com.evolveum.midpoint.repo.common.expression.ExpressionEvaluator;
import com.evolveum.midpoint.repo.common.expression.ExpressionFactory;
import com.evolveum.midpoint.schema.result.OperationResult;
import com.evolveum.midpoint.util.exception.ObjectNotFoundException;
import com.evolveum.midpoint.util.exception.SchemaException;
import com.evolveum.midpoint.xml.ns._public.common.common_3.FunctionExpressionEvaluatorType;
import com.evolveum.midpoint.xml.ns._public.common.common_3.ObjectFactory;

/**
 * This is NOT autowired evaluator.
 * 
 * @author semancik
 *
 */
public class FunctionExpressionEvaluatorFactory extends AbstractObjectResolvableExpressionEvaluatorFactory {

    private final Protector protector;
    private final PrismContext prismContext;

    public FunctionExpressionEvaluatorFactory(ExpressionFactory expressionFactory, Protector protector,
            PrismContext prismContext) {
        super(expressionFactory);
        this.protector = protector;
        this.prismContext = prismContext;
    }

    @Override
    public QName getElementName() {
        return new ObjectFactory().createFunction(new FunctionExpressionEvaluatorType()).getName();
    }

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

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

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

        Object evaluatorTypeObject = null;
        if (evaluatorElement != null) {
            evaluatorTypeObject = evaluatorElement.getValue();
        }
        if (evaluatorTypeObject != null && !(evaluatorTypeObject instanceof FunctionExpressionEvaluatorType)) {
            throw new SchemaException("Function expression evaluator cannot handle elements of type "
                    + evaluatorTypeObject.getClass().getName() + " in " + contextDescription);
        }

        FunctionExpressionEvaluatorType functionEvaluatorType = (FunctionExpressionEvaluatorType) evaluatorTypeObject;

        return new FunctionExpressionEvaluator(functionEvaluatorType, outputDefinition, protector,
                getObjectResolver(), prismContext);
    }

}