/**
 * Licensed to Jasig under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright ownership. Jasig
 * 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:
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0
 *
 * <p>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.apereo.portal.permission.target;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

/**
 * PermissionTargetProviderRegistryImpl provides the default implementation of the permission target
 * provider registry interface. This implementation is a simple in-memory map.
 *
 * <p>TODO: We still need to add Spring auto-wiring friendliness.
 *
 * @since 3.3
 */
public class PermissionTargetProviderRegistryImpl implements IPermissionTargetProviderRegistry {

    private Map<String, IPermissionTargetProvider> providers =
            new HashMap<String, IPermissionTargetProvider>();

    /** Default constructor */
    public PermissionTargetProviderRegistryImpl() {}

    /**
     * Construct a new target provider registry and initialize it with the supplied map of key ->
     * provider pairs.
     *
     * @param providers
     */
    public void setProviders(Map<String, IPermissionTargetProvider> providers) {
        this.providers.clear();
        for (Map.Entry<String, IPermissionTargetProvider> provider : providers.entrySet()) {
            this.providers.put(provider.getKey(), provider.getValue());
        }
    }

    /*
     * (non-Javadoc)
     * @see org.apereo.portal.permission.target.IPermissionTargetProviderRegistry#getTargetProvider(java.lang.String)
     */
    public IPermissionTargetProvider getTargetProvider(String key) {
        return providers.get(key);
    }

    /*
     * (non-Javadoc)
     * @see org.apereo.portal.permission.target.IPermissionTargetProviderRegistry#getTargetProviders()
     */
    public Collection<IPermissionTargetProvider> getTargetProviders() {
        return this.providers.values();
    }
}