com.google.api.ads.adwords.awalerting.util.DynamicPropertyPlaceholderConfigurer.java Source code

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Here is the source code for com.google.api.ads.adwords.awalerting.util.DynamicPropertyPlaceholderConfigurer.java

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// Copyright 2015 Google Inc. All Rights Reserved.
//
// 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 com.google.api.ads.adwords.awalerting.util;

import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;
import org.springframework.core.io.Resource;

/**
 * This class is used to inject dynamic resource files into the Spring application context.
 */
public class DynamicPropertyPlaceholderConfigurer extends PropertyPlaceholderConfigurer {
    private static Resource dynamicResource;

    /**
     * Populates the location of the property place holder, with the statically set location.
     */
    public DynamicPropertyPlaceholderConfigurer() {
        if (DynamicPropertyPlaceholderConfigurer.dynamicResource != null) {
            this.setLocation(DynamicPropertyPlaceholderConfigurer.dynamicResource);
        }
    }

    /**
     * Sets the location of the resource that will be recovered dynamically by the container.
     *
     * @param dynamicResource the dynamicResource to set
     */
    public static void setDynamicResource(Resource dynamicResource) {
        if (DynamicPropertyPlaceholderConfigurer.dynamicResource == null) {
            DynamicPropertyPlaceholderConfigurer.dynamicResource = dynamicResource;
        }
    }
}