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package com.sun.jts.pi;

import org.omg.CORBA.Any;
import org.omg.CORBA.Policy;
import org.omg.CORBA.PolicyError;
import org.omg.CORBA.LocalObject;

import org.omg.CosTransactions.SHARED;
import org.omg.CosTransactions.UNSHARED;
import org.omg.CosTransactions.EITHER;
import org.omg.CosTransactions.INVOCATION_POLICY_TYPE;
import org.omg.CosTransactions.InvocationPolicyValueHelper;

import org.omg.PortableInterceptor.PolicyFactory;

/**
 * This is the PolicyFactory to create an InvocationPolicy object.
 *
 * @author Ram Jeyaraman 11/11/2000
 * @version 1.0
 */
public class InvocationPolicyFactory
        extends LocalObject implements PolicyFactory {

    public InvocationPolicyFactory() {}

    public Policy create_policy(int type, Any value) throws PolicyError {

        if (type != INVOCATION_POLICY_TYPE.value) {
            throw new PolicyError("Invalid InvocationPolicyType", (short) 0);
        }

        short policyValue = InvocationPolicyValueHelper.extract(value);

        switch (policyValue) {
        case SHARED.value :
        case UNSHARED.value :
        case EITHER.value :
            break;
        default :
            throw new PolicyError("Invalid InvocationPolicyValue", (short) 1);
        }

        return new InvocationPolicyImpl(policyValue);
    }
}