ar.com.zauber.commons.spring.beans.factory.impl.BooleanSystemPropertyCaseBlock.java Source code

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/**
 * Copyright (c) 2005-2012 Zauber S.A. <http://www.zaubersoftware.com/>
 *
 * 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 ar.com.zauber.commons.spring.beans.factory.impl;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.Validate;

import ar.com.zauber.commons.spring.beans.factory.CaseBlock;

/**
 * devuelve un bean solo si una propiedad de sistema es true
 * 
 * @author Juan F. Codagnone
 * @since Jun 10, 2008
 */
public class BooleanSystemPropertyCaseBlock implements CaseBlock {
    private final String propertyName;
    private final Object object;

    /** @param propertyName propiedad a evaluar */
    public BooleanSystemPropertyCaseBlock(final String propertyName, final Object object) {
        Validate.isTrue(!StringUtils.isBlank(propertyName));
        Validate.notNull(object);

        this.propertyName = propertyName;
        this.object = object;
    }

    /** @see CaseBlock#evaluate() */
    public final boolean evaluate() {
        return Boolean.parseBoolean(System.getProperty(propertyName, "false"));
    }

    /** @see CaseBlock#getObject() */
    public final Object getObject() {

        return object;
    }
}