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/*
* Copyright (c) 1997, 2022 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;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import javax.xml.namespace.QName;
import com.sun.xml.ws.policy.privateutil.PolicyUtils;
import com.sun.xml.ws.policy.sourcemodel.AssertionData;
import com.sun.xml.ws.policy.sourcemodel.ModelNode;
/**
* Base class for any policy assertion implementations. It defines the common
* interface and provides some default implentation for common policy assertion
* functionality.
*
* NOTE: Assertion implementers should not extend this class directly. {@link SimpleAssertion}
* or {@link ComplexAssertion} should be used as a base class instead.
*
* @author Marek Potociar
* @author Fabian Ritzmann
*/
public abstract class PolicyAssertion {
private final AssertionData data;
private AssertionSet parameters;
private NestedPolicy nestedPolicy; // TODO: remove
protected PolicyAssertion() {
this.data = AssertionData.createAssertionData(null);
this.parameters = AssertionSet.createAssertionSet(null);
}
/**
* Creates generic assertionand stores the data specified in input parameters
*
* @param assertionData assertion creation data specifying the details of newly created assertion. May be {@code null}.
* @param assertionParameters collection of assertions parameters of this policy assertion. May be {@code null}.
* @param nestedAlternative assertion set specifying nested policy alternative. May be {@code null}.
*
* @deprecated Non-abstract assertion types should derive from {@link SimpleAssertion}
* or {@link ComplexAssertion} instead. {@link Policy} class will not provide support for
* nested policy alternatives in the future. This responsibility is delegated to
* {@link ComplexAssertion} class instead.
*/
@Deprecated
protected PolicyAssertion(final AssertionData assertionData, final Collection assertionParameters, final AssertionSet nestedAlternative) {
this.data = assertionData;
if (nestedAlternative != null) {
this.nestedPolicy = NestedPolicy.createNestedPolicy(nestedAlternative);
}
this.parameters = AssertionSet.createAssertionSet(assertionParameters);
}
/**
* Creates generic assertionand stores the data specified in input parameters
*
* @param assertionData assertion creation data specifying the details of newly created assertion
* @param assertionParameters collection of assertions parameters of this policy assertion. May be {@code null}.
*/
protected PolicyAssertion(final AssertionData assertionData, final Collection assertionParameters) {
if (assertionData == null) {
this.data = AssertionData.createAssertionData(null);
} else {
this.data = assertionData;
}
this.parameters = AssertionSet.createAssertionSet(assertionParameters);
}
/**
* Returns the fully qualified name of the assertion.
*
* @return assertion's fully qualified name.
*/
public final QName getName() {
return data.getName();
}
/**
* Returns the value of the assertion - the character data content contained in the assertion element representation.
*
* @return assertion's value. May return {@code null} if there is no value set for the assertion.
*/
public final String getValue() {
return data.getValue();
}
/**
* Method specifies whether the assertion is otpional or not.
*
* This is a default implementation that may be overriden. The method returns {@code true} if the {@code wsp:optional} attribute
* is present on the assertion and its value is {@code 'true'}. Otherwise the method returns {@code false}.
*
* @return {@code 'true'} if the assertion is optional. Returns {@code false} otherwise.
*/
public boolean isOptional() {
return data.isOptionalAttributeSet();
}
/**
* Method specifies whether the assertion is ignorable or not.
*
* This is a default implementation that may be overriden. The method returns {@code true} if the {@code wsp:Ignorable} attribute
* is present on the assertion and its value is {@code 'true'}. Otherwise the method returns {@code false}.
*
* @return {@code 'true'} if the assertion is ignorable. Returns {@code false} otherwise.
*/
public boolean isIgnorable() {
return data.isIgnorableAttributeSet();
}
/**
* Method specifies whether the assertion is private or not. This is specified by our proprietary visibility element.
*
* @return {@code 'true'} if the assertion is marked as private (i.e. should not be marshalled int generated WSDL documents). Returns {@code false} otherwise.
*/
public final boolean isPrivate() {
return data.isPrivateAttributeSet();
}
/**
* Returns the disconnected set of attributes attached to the assertion. Each attribute is represented as a single
* {@code Map.Entry} element.
*
* 'Disconnected' means, that the result of this method will not be synchronized with any consequent assertion's attribute modification. It is
* also important to notice that a manipulation with returned set of attributes will not have any effect on the actual assertion's
* attributes.
*
* @return disconected set of attributes attached to the assertion.
*/
public final Set> getAttributesSet() {
return data.getAttributesSet();
}
/**
* Returns the disconnected map of attributes attached to the assertion.
*
* 'Disconnected' means, that the result of this method will not be synchronized with any consequent assertion's attribute modification. It is
* also important to notice that a manipulation with returned set of attributes will not have any effect on the actual assertion's
* attributes.
*
* @return disconnected map of attributes attached to the assertion.
*/
public final Map getAttributes() {
return data.getAttributes();
}
/**
* Returns the value of an attribute. Returns null if an attribute with the given name does not exist.
*
* @param name The fully qualified name of the attribute
* @return The value of the attribute. Returns {@code null} if there is no such attribute or if it's value is null.
*/
public final String getAttributeValue(final QName name) {
return data.getAttributeValue(name);
}
/**
* Returns the boolean information whether this assertion contains any parameters.
*
* @return {@code true} if the assertion contains parameters. Returns {@code false} otherwise.
*/
public final boolean hasParameters() {
return !parameters.isEmpty();
}
/**
* Returns the assertion's parameter collection iterator.
*
* @return the assertion's parameter collection iterator.
*/
public final Iterator getParametersIterator() {
return parameters.iterator();
}
boolean isParameter() {
return data.getNodeType() == ModelNode.Type.ASSERTION_PARAMETER_NODE;
}
/**
* Returns the boolean information whether this assertion contains nested policy.
*
* @return {@code true} if the assertion contains child (nested) policy. Returns {@code false} otherwise.
*/
public boolean hasNestedPolicy() {
// TODO: make abstract
return getNestedPolicy() != null;
}
/**
* Returns the nested policy if any.
*
* @return the nested policy if the assertion contains a nested policy. Returns {@code null} otherwise.
*/
public NestedPolicy getNestedPolicy() {
// TODO: make abstract
return nestedPolicy;
}
/**
* Casts the assertion to the implementation type. Returns null if that is not
* possible.
*
* @param The implementation type of the assertion.
* @param type The implementation type of the assertion. May not be null.
* @return The instance of the implementation type. Null otherwise.
*/
public T getImplementation(Class type) {
if (type.isAssignableFrom(this.getClass())) {
return type.cast(this);
}
else {
return null;
}
}
/**
* An {@code Object.toString()} method override.
*/
@Override
public String toString() {
return toString(0, new StringBuffer()).toString();
}
/**
* A helper method that appends indented string representation of this instance to the input string buffer.
*
* @param indentLevel indentation level to be used.
* @param buffer buffer to be used for appending string representation of this instance
* @return modified buffer containing new string representation of the instance
*/
protected StringBuffer toString(final int indentLevel, final StringBuffer buffer) {
final String indent = PolicyUtils.Text.createIndent(indentLevel);
final String innerIndent = PolicyUtils.Text.createIndent(indentLevel + 1);
buffer.append(indent).append("Assertion[").append(this.getClass().getName()).append("] {").append(PolicyUtils.Text.NEW_LINE);
data.toString(indentLevel + 1, buffer);
buffer.append(PolicyUtils.Text.NEW_LINE);
if (hasParameters()) {
buffer.append(innerIndent).append("parameters {").append(PolicyUtils.Text.NEW_LINE);
for (PolicyAssertion parameter : parameters) {
parameter.toString(indentLevel + 2, buffer).append(PolicyUtils.Text.NEW_LINE);
}
buffer.append(innerIndent).append('}').append(PolicyUtils.Text.NEW_LINE);
} else {
buffer.append(innerIndent).append("no parameters").append(PolicyUtils.Text.NEW_LINE);
}
if (hasNestedPolicy()) {
getNestedPolicy().toString(indentLevel + 1, buffer).append(PolicyUtils.Text.NEW_LINE);
} else {
buffer.append(innerIndent).append("no nested policy").append(PolicyUtils.Text.NEW_LINE);
}
buffer.append(indent).append('}');
return buffer;
}
/**
* Checks whether this policy alternative is compatible with the provided policy alternative.
*
* @param assertion policy alternative used for compatibility test
* @param mode compatibility mode to be used
* @return {@code true} if the two policy alternatives are compatible, {@code false} otherwise
*/
boolean isCompatibleWith(final PolicyAssertion assertion, PolicyIntersector.CompatibilityMode mode) {
boolean result = this.data.getName().equals(assertion.data.getName()) && (this.hasNestedPolicy() == assertion.hasNestedPolicy());
if (result && this.hasNestedPolicy()) {
result = this.getNestedPolicy().getAssertionSet().isCompatibleWith(assertion.getNestedPolicy().getAssertionSet(), mode);
}
return result;
}
/**
* An {@code Object.equals(Object obj)} method override.
*/
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof PolicyAssertion)) {
return false;
}
final PolicyAssertion that = (PolicyAssertion) obj;
boolean result = true;
result = result && this.data.equals(that.data);
result = result && this.parameters.equals(that.parameters);
result = result && ((this.getNestedPolicy() == null) ? (that.getNestedPolicy() == null) : this.getNestedPolicy().equals(that.getNestedPolicy()));
return result;
}
/**
* An {@code Object.hashCode()} method override.
*/
@Override
public int hashCode() {
int result = 17;
result = 37 * result + data.hashCode();
result = 37 * result + ((hasParameters()) ? 17 : 0);
result = 37 * result + ((hasNestedPolicy()) ? 17 : 0);
return result;
}
}