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Grails Web Application Framework

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/*
 * Copyright 2015 original authors
 *
 * 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.grails.config

import groovy.transform.CompileStatic
import org.springframework.core.env.EnumerablePropertySource

/**
 * A {@link org.springframework.core.env.PropertySource} with keys prefixed by the given prefix
 *
 * @author Graeme Rocher
 * @since 3.0
 */

@CompileStatic
class PrefixedMapPropertySource extends EnumerablePropertySource {
    final EnumerablePropertySource source
    final String prefix
    final String[] propertyNames

    PrefixedMapPropertySource(String prefix, EnumerablePropertySource source) {
        super(prefix + "_" + source.getName())
        this.prefix = prefix
        this.source = source
        this.propertyNames = source.propertyNames.collect() { String n -> "${prefix}.$n".toString() } as String[]
    }

    @Override
    Object getProperty(String name) {
        return source.getProperty("${prefix}.$name")
    }
}