org.nabucco.alfresco.enhScriptEnv.common.script.converter.general.AdapterObjectConverter.java Source code

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Here is the source code for org.nabucco.alfresco.enhScriptEnv.common.script.converter.general.AdapterObjectConverter.java

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/*
 * Copyright 2015 PRODYNA AG
 *
 * Licensed under the Eclipse Public License (EPL), Version 1.0 (the "License"); you may not use
 * this file except in compliance with the License. You may obtain a copy of the License at
 *
 * https://www.eclipse.org/legal/epl-v10.html
 *
 * 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.nabucco.alfresco.enhScriptEnv.common.script.converter.general;

import org.alfresco.util.PropertyCheck;
import org.nabucco.alfresco.enhScriptEnv.common.script.converter.ValueConverter;
import org.nabucco.alfresco.enhScriptEnv.common.script.converter.ValueInstanceConverterRegistry;
import org.nabucco.alfresco.enhScriptEnv.common.script.converter.ValueInstanceConverterRegistry.ValueInstanceConverter;
import org.nabucco.alfresco.enhScriptEnv.common.script.aop.AdapterObject;
import org.springframework.beans.factory.InitializingBean;

/**
 * @author Axel Faust, <a href="http://www.prodyna.com">PRODYNA AG</a>
 */
public class AdapterObjectConverter implements ValueInstanceConverter, InitializingBean {
    protected ValueInstanceConverterRegistry registry;

    /**
     * @param registry
     *            the registry to set
     */
    public void setRegistry(final ValueInstanceConverterRegistry registry) {
        this.registry = registry;
    }

    /**
     *
     * {@inheritDoc}
     */
    @Override
    public void afterPropertiesSet() {
        PropertyCheck.mandatory(this, "registry", this.registry);

        this.registry.registerValueInstanceConverter(AdapterObject.class, this);
    }

    /**
     *
     * {@inheritDoc}
     */
    @Override
    public int getForScriptConversionConfidence(final Class<?> valueInstanceClass, final Class<?> expectedClass) {
        // supersede any conversion because an AdapterObject is already converted
        return HIGHEST_CONFIDENCE;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean canConvertValueForScript(final Object value, final ValueConverter globalDelegate,
            final Class<?> expectedClass) {
        // an AdapterObject is already converted, but say yes so we can supersede
        return value instanceof AdapterObject;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Object convertValueForScript(final Object value, final ValueConverter globalDelegate,
            final Class<?> expectedClass) {
        if (!(value instanceof AdapterObject)) {
            throw new IllegalArgumentException("value must be a " + AdapterObject.class);
        }

        // an AdapterObject is already converted
        return value;
    }

    /**
     *
     * {@inheritDoc}
     */
    @Override
    public int getForJavaConversionConfidence(final Class<?> valueInstanceClass, final Class<?> expectedClass) {
        final int confidence;
        if (AdapterObject.class.isAssignableFrom(valueInstanceClass)) {
            confidence = HIGHEST_CONFIDENCE;
        } else {
            confidence = LOWEST_CONFIDENCE;
        }
        return confidence;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean canConvertValueForJava(final Object value, final ValueConverter globalDelegate,
            final Class<?> expectedClass) {
        final boolean canConvert = AdapterObject.class.isInstance(value)
                && expectedClass.isAssignableFrom(((AdapterObject) value).getBackingObject().getClass());
        return canConvert;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Object convertValueForJava(final Object value, final ValueConverter globalDelegate,
            final Class<?> expectedClass) {
        if (!(value instanceof AdapterObject)) {
            throw new IllegalArgumentException("value must be a " + AdapterObject.class);
        }

        final Object result = ((AdapterObject) value).getBackingObject();

        return result;
    }

}