org.xacml4j.spring.DecisionCombiningAlgorithmProviderBean.java Source code

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Here is the source code for org.xacml4j.spring.DecisionCombiningAlgorithmProviderBean.java

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package org.xacml4j.spring;

/*
 * #%L
 * Xacml4J Spring 3.x Support Module
 * %%
 * Copyright (C) 2009 - 2014 Xacml4J.org
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/lgpl-3.0.html>.
 * #L%
 */

import org.springframework.beans.factory.config.AbstractFactoryBean;
import org.xacml4j.v30.spi.combine.DecisionCombiningAlgorithmProvider;

import com.google.common.base.Preconditions;

public class DecisionCombiningAlgorithmProviderBean
        extends AbstractFactoryBean<DecisionCombiningAlgorithmProvider> {
    private Class<?> providerClass;
    private DecisionCombiningAlgorithmProvider providerInstance;

    public void setClass(Class<?> clazz) {
        Preconditions.checkNotNull(clazz);
        Preconditions.checkState(providerInstance == null,
                "Either provider instance or class can be specified, NOT both");
        this.providerClass = clazz;
    }

    public void setRef(DecisionCombiningAlgorithmProvider provider) {
        Preconditions.checkNotNull(provider);
        Preconditions.checkState(providerClass == null,
                "Either provider instance or class can be specified, NOT both");
        this.providerInstance = provider;
    }

    @Override
    protected DecisionCombiningAlgorithmProvider createInstance() throws Exception {
        Preconditions.checkState(providerInstance != null);
        return providerInstance;
    }

    public Class<?> getProviderClass() {
        return providerClass;
    }

    @Override
    public Class<?> getObjectType() {
        return DecisionCombiningAlgorithmProvider.class;
    }
}