org.wicketopia.mapping.ClassBasedTypeMapping.java Source code

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Here is the source code for org.wicketopia.mapping.ClassBasedTypeMapping.java

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/*
 * Copyright (c) 2011 Carman Consulting, Inc.
 *
 * 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 org.wicketopia.mapping;

import org.apache.commons.lang.ClassUtils;
import org.metastopheles.PropertyMetaData;

import java.util.HashMap;
import java.util.LinkedList;
import java.util.Map;
import java.util.Queue;

/**
 * @since 1.0
 */
public class ClassBasedTypeMapping implements TypeMapping {
    //----------------------------------------------------------------------------------------------------------------------
    // Fields
    //----------------------------------------------------------------------------------------------------------------------

    private Map<String, String> typeMap = new HashMap<String, String>();
    private final String defaultType;

    //----------------------------------------------------------------------------------------------------------------------
    // Constructors
    //----------------------------------------------------------------------------------------------------------------------

    public ClassBasedTypeMapping() {
        this.defaultType = null;
    }

    public ClassBasedTypeMapping(String defaultType) {
        this.defaultType = defaultType;
    }

    //----------------------------------------------------------------------------------------------------------------------
    // TypeMapping Implementation
    //----------------------------------------------------------------------------------------------------------------------

    @Override
    public String getTypeName(PropertyMetaData propertyMetaData) {
        Class<?> propertyType = propertyMetaData.getPropertyDescriptor().getPropertyType();
        return getTypeName(propertyType);
    }

    public String getTypeName(Class<?> propertyType) {
        final Queue<Class<?>> typeQueue = createTypeQueue(propertyType);
        while (!typeQueue.isEmpty()) {
            Class<?> type = typeQueue.remove();
            final String editorType = typeMap.get(type.getName());
            if (editorType != null) {
                return editorType;
            }
        }
        return defaultType;
    }
    //----------------------------------------------------------------------------------------------------------------------
    // Other Methods
    //----------------------------------------------------------------------------------------------------------------------

    public void addTypeOverride(Class<?> propertyType, String type) {
        typeMap.put(propertyType.getName(), type);
    }

    @SuppressWarnings("unchecked")
    private Queue<Class<?>> createTypeQueue(final Class<?> originalType) {
        Queue<Class<?>> queue = new LinkedList<Class<?>>();
        Class currentType = originalType;
        do {
            queue.add(currentType);
            currentType = currentType.getSuperclass();
        } while (currentType != null);
        queue.addAll(ClassUtils.getAllInterfaces(originalType));
        return queue;
    }

    public void setTypeOverrides(Map<Class, String> typeOverrides) {
        for (Map.Entry<Class, String> entry : typeOverrides.entrySet()) {
            typeMap.put(entry.getKey().getName(), entry.getValue());
        }
    }
}