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package com.sun.xml.ws.policy.spi;
import com.sun.xml.ws.policy.PolicyAssertion;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
import javax.xml.namespace.QName;
/**
* This abstract policy assertion validator validates assertions by their qualified
* name. Server and client side validation methods return {@link Fitness} based on
* following schema:
*
* <ul>
* <li>{@link Fitness#SUPPORTED} - if the assertion qualified name is in the list of
* supported assertion names on the server/client side</li>
* <li>{@link Fitness#UNSUPPORTED} - if the assertion qualified name is not in the list of
* supported assertion names on the server/client side, however it is in the list of
* assertion names supported on the other side</li>
* <li>{@link Fitness#UNKNOWN} - if the assertion qualified name is not present in the any of
* the lists of supported assertion names</li>
* </ul>
*
* For some domains such validation may be sufficient enough. Other domains may
* use functionality of this base class as a first step validation before any attempts
* to validate content of the assertion. To do this one needs to override and reuse
* the default behavior of {@link #validateClientSide(PolicyAssertion)} and
* {@link #validateServerSide(PolicyAssertion)} methods.
*
* @author Marek Potociar (marek.potociar at sun.com)
*/
public abstract class AbstractQNameValidator implements PolicyAssertionValidator {
private final Set<String> supportedDomains = new HashSet<String>();
private final Collection<QName> serverAssertions;
private final Collection<QName> clientAssertions;
/**
* Constructor that takes two collections specifying qualified names of assertions
* supported on either server or client side. The set of all assertion namespaces
* defines list of all domains supported by the assertion validator
* (see {@link PolicyAssertionValidator#declareSupportedDomains}).
*/
protected AbstractQNameValidator(Collection<QName> serverSideAssertions, Collection<QName> clientSideAssertions) {
if (serverSideAssertions != null) {
this.serverAssertions = new HashSet<QName>(serverSideAssertions);
for (QName assertion : this.serverAssertions) {
supportedDomains.add(assertion.getNamespaceURI());
}
} else {
this.serverAssertions = new HashSet<QName>(0);
}
if (clientSideAssertions != null) {
this.clientAssertions = new HashSet<QName>(clientSideAssertions);
for (QName assertion : this.clientAssertions) {
supportedDomains.add(assertion.getNamespaceURI());
}
} else {
this.clientAssertions = new HashSet<QName>(0);
}
}
public String[] declareSupportedDomains() {
return supportedDomains.toArray(new String[supportedDomains.size()]);
}
public Fitness validateClientSide(PolicyAssertion assertion) {
return validateAssertion(assertion, clientAssertions, serverAssertions);
}
public Fitness validateServerSide(PolicyAssertion assertion) {
return validateAssertion(assertion, serverAssertions, clientAssertions);
}
private Fitness validateAssertion(PolicyAssertion assertion, Collection<QName> thisSideAssertions, Collection<QName> otherSideAssertions) {
QName assertionName = assertion.getName();
if (thisSideAssertions.contains(assertionName)) {
return Fitness.SUPPORTED;
} else if (otherSideAssertions.contains(assertionName)) {
return Fitness.UNSUPPORTED;
} else {
return Fitness.UNKNOWN;
}
}
}
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