org.apache.cayenne.di.spi.DefaultMapBuilder Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of cayenne-client
An aggregation of 1.4, 1.5 modules into an ROP client jar.
There is a newer version: 4.2.1
/*****************************************************************
 *   Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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.apache.cayenne.di.spi;

import java.util.Map;
import java.util.Map.Entry;

import org.apache.cayenne.ConfigurationException;
import org.apache.cayenne.di.Key;
import org.apache.cayenne.di.MapBuilder;
import org.apache.cayenne.di.Provider;
import org.apache.cayenne.di.Scope;

/**
 * @since 3.1
 */
class DefaultMapBuilder implements MapBuilder {

    private DefaultInjector injector;
    private Key> bindingKey;

    DefaultMapBuilder(Key> bindingKey, DefaultInjector injector) {
        this.injector = injector;
        this.bindingKey = bindingKey;

        // trigger initialization of the MapProvider right away, as we need to bind an
        // empty map even if the user never calls 'put'
        getMapProvider();
    }

    public MapBuilder put(String key, Class interfaceType)
            throws ConfigurationException {

        // TODO: andrus 11/15/2009 - report overriding the key??
        getMapProvider().put(key, injector.getProvider(interfaceType));
        return this;
    }

    public MapBuilder put(String key, T value) throws ConfigurationException {

        Provider provider0 = new InstanceProvider(value);
        Provider provider1 = new FieldInjectingProvider(provider0, injector);

        // TODO: andrus 11/15/2009 - report overriding the key??
        getMapProvider().put(key, provider1);
        return this;
    }

    public MapBuilder putAll(Map map) throws ConfigurationException {

        MapProvider provider = getMapProvider();

        for (Entry entry : map.entrySet()) {

            Provider provider0 = new InstanceProvider(entry.getValue());
            Provider provider1 = new FieldInjectingProvider(provider0, injector);
            provider.put(entry.getKey(), provider1);
        }

        return this;
    }

    private MapProvider getMapProvider() {
        MapProvider provider = null;

        Binding> binding = injector.getBinding(bindingKey);
        if (binding == null) {
            provider = new MapProvider();
            injector.putBinding(bindingKey, provider);
        }
        else {
            provider = (MapProvider) binding.getUnscoped();
        }

        return provider;
    }

    public void in(Scope scope) {
        injector.changeBindingScope(bindingKey, scope);
    }
}