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/*
* Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.xml.ws.policy.sourcemodel;
import com.sun.xml.ws.policy.AssertionSet;
import com.sun.xml.ws.policy.NestedPolicy;
import com.sun.xml.ws.policy.Policy;
import com.sun.xml.ws.policy.PolicyAssertion;
import com.sun.xml.ws.policy.PolicyException;
import com.sun.xml.ws.policy.privateutil.LocalizationMessages;
import com.sun.xml.ws.policy.privateutil.PolicyLogger;
import java.util.Iterator;
/**
* Translate a policy into a PolicySourceModel.
*
* Code that depends on JAX-WS should use com.sun.xml.ws.api.policy.ModelGenerator
* instead of this class.
*
* @author Marek Potociar
* @author Fabian Ritzmann
*/
public abstract class PolicyModelGenerator {
private static final PolicyLogger LOGGER = PolicyLogger.getLogger(PolicyModelGenerator.class);
/**
* This protected constructor avoids direct instantiation from outside of the class
*/
protected PolicyModelGenerator() {
// nothing to initialize
}
/**
* Factory method that returns a {@link PolicyModelGenerator} instance.
*
* @return {@link PolicyModelGenerator} instance
*/
public static PolicyModelGenerator getGenerator() {
return getNormalizedGenerator(new PolicySourceModelCreator());
}
/**
* Allows derived classes to create instances of the package private
* CompactModelGenerator.
*
* @param creator An implementation of the PolicySourceModelCreator.
* @return An instance of CompactModelGenerator.
*/
protected static PolicyModelGenerator getCompactGenerator(PolicySourceModelCreator creator) {
return new CompactModelGenerator(creator);
}
/**
* Allows derived classes to create instances of the package private
* NormalizedModelGenerator.
*
* @param creator An implementation of the PolicySourceModelCreator.
* @return An instance of NormalizedModelGenerator.
*/
protected static PolicyModelGenerator getNormalizedGenerator(PolicySourceModelCreator creator) {
return new NormalizedModelGenerator(creator);
}
/**
* This method translates a {@link Policy} into a
* {@link com.sun.xml.ws.policy.sourcemodel policy infoset}. The resulting
* PolicySourceModel is disconnected from the input policy, thus any
* additional changes in the policy will have no effect on the PolicySourceModel.
*
* @param policy The policy to be translated into an infoset. May be null.
* @return translated The policy infoset. May be null if the input policy was
* null.
* @throws PolicyException in case Policy translation fails.
*/
public abstract PolicySourceModel translate(final Policy policy) throws PolicyException;
/**
* Iterates through a nested policy and returns the corresponding policy info model.
*
* @param parentAssertion The parent node.
* @param policy The nested policy.
* @return The nested policy translated to the policy info model.
*/
protected abstract ModelNode translate(final ModelNode parentAssertion, final NestedPolicy policy);
/**
* Add the contents of the assertion set as child node to the given model node.
*
* @param node The content of this assertion set are added as child nodes to this node.
* May not be null.
* @param assertions The assertions that are to be added to the node. May not be null.
*/
protected void translate(final ModelNode node, final AssertionSet assertions) {
for (PolicyAssertion assertion : assertions) {
final AssertionData data = AssertionData.createAssertionData(assertion.getName(), assertion.getValue(), assertion.getAttributes(), assertion.isOptional(), assertion.isIgnorable());
final ModelNode assertionNode = node.createChildAssertionNode(data);
if (assertion.hasNestedPolicy()) {
translate(assertionNode, assertion.getNestedPolicy());
}
if (assertion.hasParameters()) {
translate(assertionNode, assertion.getParametersIterator());
}
}
}
/**
* Iterates through all contained assertions and adds them to the info model.
*
* @param assertionParametersIterator The contained assertions.
* @param assertionNode The node to which the assertions are added as child nodes
*/
protected void translate(final ModelNode assertionNode, final Iterator assertionParametersIterator) {
while (assertionParametersIterator.hasNext()) {
final PolicyAssertion assertionParameter = assertionParametersIterator.next();
final AssertionData data = AssertionData.createAssertionParameterData(assertionParameter.getName(), assertionParameter.getValue(), assertionParameter.getAttributes());
final ModelNode assertionParameterNode = assertionNode.createChildAssertionParameterNode(data);
if (assertionParameter.hasNestedPolicy()) {
throw LOGGER.logSevereException(new IllegalStateException(LocalizationMessages.WSP_0005_UNEXPECTED_POLICY_ELEMENT_FOUND_IN_ASSERTION_PARAM(assertionParameter)));
}
if (assertionParameter.hasNestedAssertions()) {
translate(assertionParameterNode, assertionParameter.getNestedAssertionsIterator());
}
}
}
/**
* Allows derived classes to pass their own implementation of PolicySourceModelCreator
* into the PolicyModelGenerator instance.
*/
protected static class PolicySourceModelCreator {
/**
* Create an instance of the PolicySourceModel.
*
* @param policy The policy that underlies the created PolicySourceModel.
* @return An instance of the PolicySourceModel.
*/
protected PolicySourceModel create(final Policy policy) {
return PolicySourceModel.createPolicySourceModel(policy.getNamespaceVersion(),
policy.getId(), policy.getName());
}
}
}