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Apache CXF Runtime WS Policy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.cxf.ws.policy;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.ResourceBundle;
import java.util.Set;
import javax.xml.namespace.QName;
import org.apache.cxf.common.i18n.BundleUtils;
import org.apache.cxf.common.i18n.Message;
import org.apache.cxf.helpers.CastUtils;
import org.apache.neethi.Assertion;
import org.apache.neethi.Policy;
import org.apache.neethi.PolicyComponent;
import org.apache.neethi.PolicyContainingAssertion;
import org.apache.neethi.PolicyOperator;
public class AssertionInfoMap extends HashMap> {
private static final long serialVersionUID = -4059701923851991413L;
private static final ResourceBundle BUNDLE = BundleUtils.getBundle(AssertionInfoMap.class, "APIMessages");
public AssertionInfoMap(Policy p) {
this(getAssertions(p));
}
public AssertionInfoMap(Collection assertions) {
super(assertions.size() < 6 ? 6 : assertions.size());
for (Assertion a : assertions) {
putAssertionInfo(a);
}
}
private void putAssertionInfo(Assertion a) {
if (a instanceof PolicyContainingAssertion) {
Policy p = ((PolicyContainingAssertion)a).getPolicy();
if (p != null) {
List pcs = new ArrayList<>();
getAssertions(p, pcs);
for (Assertion na : pcs) {
putAssertionInfo(na);
}
}
}
AssertionInfo ai = new AssertionInfo(a);
Collection ail = get(a.getName());
if (ail == null) {
ail = new ArrayList<>();
put(a.getName(), ail);
}
for (AssertionInfo ai2 : ail) {
if (ai2.getAssertion() == a) {
return;
}
}
ail.add(ai);
}
public Collection getAssertionInfo(QName name) {
Collection ail = get(name);
return ail != null ? ail
: CastUtils.cast(Collections.EMPTY_LIST, AssertionInfo.class);
}
public boolean supportsAlternative(PolicyComponent assertion,
List errors) {
boolean pass = true;
if (assertion instanceof PolicyAssertion) {
PolicyAssertion a = (PolicyAssertion)assertion;
if (!a.isAsserted(this) && !a.isOptional()) {
errors.add(a.getName());
pass = false;
}
} else if (assertion instanceof Assertion) {
Assertion ass = (Assertion)assertion;
Collection ail = getAssertionInfo(ass.getName());
boolean found = false;
for (AssertionInfo ai : ail) {
if (ai.getAssertion().equal(ass) || ai.getAssertion().equals(ass)) {
found = true;
if (!ai.isAsserted() && !ass.isOptional()) {
errors.add(ass.getName());
pass = false;
}
}
}
if (!found) {
errors.add(ass.getName());
return false;
}
}
if (assertion instanceof PolicyContainingAssertion) {
Policy p = ((PolicyContainingAssertion)assertion).getPolicy();
if (p != null) {
Iterator> alternatives = p.getAlternatives();
while (alternatives.hasNext()) {
List pc = alternatives.next();
for (Assertion p2 : pc) {
pass &= supportsAlternative(p2, errors);
}
}
}
}
return pass;
}
public boolean supportsAlternative(Collection alternative,
List errors) {
boolean pass = true;
for (PolicyComponent a : alternative) {
pass &= supportsAlternative(a, errors);
}
return pass;
}
public List> checkEffectivePolicy(Policy policy) {
List> validated = new ArrayList<>(4);
List errors = new ArrayList<>();
Iterator> alternatives = policy.getAlternatives();
while (alternatives.hasNext()) {
List pc = alternatives.next();
if (supportsAlternative(pc, errors)) {
validated.add(pc);
}
}
if (!validated.isEmpty()) {
return validated;
}
Set msgs = new LinkedHashSet<>();
for (QName name : errors) {
Collection ais = getAssertionInfo(name);
boolean found = false;
for (AssertionInfo ai : ais) {
if (!ai.isAsserted()) {
String s = name.toString();
if (ai.getErrorMessage() != null) {
s += ": " + ai.getErrorMessage();
}
msgs.add(s);
found = true;
}
}
if (!found) {
msgs.add(name.toString());
}
}
StringBuilder error = new StringBuilder();
for (String msg : msgs) {
error.append('\n').append(msg);
}
throw new PolicyException(new Message("NO_ALTERNATIVE_EXC", BUNDLE, error.toString()));
}
public void check() {
for (Collection ais : values()) {
for (AssertionInfo ai : ais) {
if (!ai.isAsserted()) {
throw new PolicyException(new org.apache.cxf.common.i18n.Message(
"NOT_ASSERTED_EXC", BUNDLE, ai.getAssertion().getName()));
}
}
}
}
private static Collection getAssertions(PolicyOperator p) {
Collection assertions = new ArrayList<>();
getAssertions(p, assertions);
return assertions;
}
private static void getAssertions(PolicyOperator p, Collection assertions) {
List pcs = p.getPolicyComponents();
for (PolicyComponent pc : pcs) {
if (pc instanceof Assertion) {
assertions.add((Assertion)pc);
} else {
getAssertions((PolicyOperator)pc, assertions);
}
}
}
}