org.openlegacy.terminal.loaders.support.ScreenEntityAnnotationLoader.java Source code

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Here is the source code for org.openlegacy.terminal.loaders.support.ScreenEntityAnnotationLoader.java

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/*******************************************************************************
 * Copyright (c) 2014 OpenLegacy Inc.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     OpenLegacy Inc. - initial API and implementation
 *******************************************************************************/
package org.openlegacy.terminal.loaders.support;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.openlegacy.EntitiesRegistry;
import org.openlegacy.annotations.screen.AnnotationConstants;
import org.openlegacy.annotations.screen.ScreenEntity;
import org.openlegacy.loaders.support.AbstractClassAnnotationLoader;
import org.openlegacy.terminal.definitions.SimpleScreenEntityDefinition;
import org.openlegacy.terminal.persistance.TerminalPersistedSnapshot;
import org.openlegacy.terminal.services.ScreenEntitiesRegistry;
import org.openlegacy.terminal.support.SimpleScreenSize;
import org.openlegacy.utils.StringUtil;
import org.openlegacy.utils.XmlSerializationUtil;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;

import java.lang.annotation.Annotation;
import java.net.URL;
import java.text.MessageFormat;
import java.util.Arrays;

@Component
@Order(1)
public class ScreenEntityAnnotationLoader extends AbstractClassAnnotationLoader {

    private final static Log logger = LogFactory.getLog(ScreenEntityAnnotationLoader.class);

    @Override
    public boolean match(Annotation annotation) {
        return annotation.annotationType() == ScreenEntity.class;
    }

    @Override
    @SuppressWarnings("rawtypes")
    public void load(EntitiesRegistry entitiesRegistry, Annotation annotation, Class<?> containingClass) {

        ScreenEntity screenEntity = (ScreenEntity) annotation;
        ScreenEntitiesRegistry screenEntitiesRegistry = (ScreenEntitiesRegistry) entitiesRegistry;

        String screenEntityName = screenEntity.name().length() > 0 ? screenEntity.name()
                : containingClass.getSimpleName();
        String displayName = screenEntity.displayName().length() > 0 ? screenEntity.displayName()
                : StringUtil.toDisplayName(screenEntityName);

        SimpleScreenEntityDefinition screenEntityDefinition = new SimpleScreenEntityDefinition(screenEntityName,
                containingClass);
        screenEntityDefinition.setEntityName(screenEntityName);
        screenEntityDefinition.setDisplayName(displayName);
        screenEntityDefinition.setRightToLeft(screenEntity.rightToLeft());
        screenEntityDefinition.setType(screenEntity.screenType());
        screenEntityDefinition.setWindow(screenEntity.window());
        screenEntityDefinition.setChild(screenEntity.child());
        screenEntityDefinition.setValidateKeys(screenEntity.validateKeys());
        screenEntityDefinition.setAutoMapKeyboardActions(screenEntity.autoMapKeyboardActions());

        screenEntityDefinition.setScreenSize(new SimpleScreenSize(screenEntity.rows(), screenEntity.columns()));

        if (!screenEntity.roles()[0].equals(AnnotationConstants.NULL)) {
            screenEntityDefinition.setRoles(Arrays.asList(screenEntity.roles()));
        }
        loadSnapshot(containingClass, screenEntityName, screenEntityDefinition);

        logger.info(MessageFormat.format("Screen \"{0}\" was added to the screen registry ({1})", screenEntityName,
                containingClass.getName()));

        screenEntitiesRegistry.add(screenEntityDefinition);
    }

    private static void loadSnapshot(Class<?> containingClass, String screenEntityName,
            SimpleScreenEntityDefinition screenEntityDefinition) {
        String snapshotXmlResourceName = MessageFormat.format("{0}-resources/{1}.xml", screenEntityName,
                containingClass.getSimpleName());
        URL snapshotXmlResource = containingClass.getResource(snapshotXmlResourceName);
        if (snapshotXmlResource != null) {
            try {
                TerminalPersistedSnapshot snapshot = XmlSerializationUtil
                        .deserialize(TerminalPersistedSnapshot.class, snapshotXmlResource.openStream());
                screenEntityDefinition.setSnapshot(snapshot);
            } catch (Exception e) {
                logger.warn("Failed to load snapshot for " + screenEntityName);
            }
        }
    }
}