You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@directory.apache.org by tr...@apache.org on 2005/12/08 07:31:58 UTC
svn commit: r355004 - in
/directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain:
./ Chain.java Command.java Context.java Filter.java impl/
impl/ChainBase.java impl/CommandBase.java impl/ContextBase.java
Author: trustin
Date: Wed Dec 7 22:31:40 2005
New Revision: 355004
URL: http://svn.apache.org/viewcvs?rev=355004&view=rev
Log:
Revived removed classes to fix Kerberos compilation errors now
Added:
directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/
directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Chain.java (with props)
directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Command.java (with props)
directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Context.java (with props)
directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Filter.java (with props)
directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/impl/
directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/impl/ChainBase.java (with props)
directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/impl/CommandBase.java (with props)
directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/impl/ContextBase.java (with props)
Added: directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Chain.java
URL: http://svn.apache.org/viewcvs/directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Chain.java?rev=355004&view=auto
==============================================================================
--- directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Chain.java (added)
+++ directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Chain.java Wed Dec 7 22:31:40 2005
@@ -0,0 +1,111 @@
+/*
+ * Copyright 2003-2004 The Apache Software Foundation
+ *
+ * Licensed 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.protocol.common.chain;
+
+/**
+ * <p>A {@link Chain} represents a configured list of
+ * {@link Command}s that will be executed in order to perform processing
+ * on a specified {@link Context}. Each included {@link Command} will be
+ * executed in turn, until either one of them returns <code>true</code>,
+ * one of the executed {@link Command}s throws an exception,
+ * or the end of the chain has been reached. The {@link Chain} itself will
+ * return the return value of the last {@link Command} that was executed
+ * (if no exception was thrown), or rethrow the thrown exception.</p>
+ *
+ * <p>Note that {@link Chain} extends {@link Command}, so that the two can
+ * be used interchangeably when a {@link Command} is expected. This makes it
+ * easy to assemble workflows in a hierarchical manner by combining subchains
+ * into an overall processing chain.</p>
+ *
+ * <p>To protect applications from evolution of this interface, specialized
+ * implementations of {@link Chain} should generally be created by extending
+ * the provided base class {@link org.apache.protocol.common.chain.impl.ChainBase})
+ * rather than directly implementing this interface.</p>
+ *
+ * <p>{@link Chain} implementations should be designed in a thread-safe
+ * manner, suitable for execution on multiple threads simultaneously. In
+ * general, this implies that the state information identifying which
+ * {@link Command} is currently being executed should be maintained in a
+ * local variable inside the <code>execute()</code> method, rather than
+ * in an instance variable. The {@link Command}s in a {@link Chain} may be
+ * configured (via calls to <code>addCommand()</code>) at any time before
+ * the <code>execute()</code> method of the {@link Chain} is first called.
+ * After that, the configuration of the {@link Chain} is frozen.</p>
+ *
+ * @author Craig R. McClanahan
+ * @version $Revision$ $Date$
+ */
+public interface Chain extends Command
+{
+ /**
+ * <p>Add a {@link Command} to the list of {@link Command}s that will
+ * be called in turn when this {@link Chain}'s <code>execute()</code>
+ * method is called. Once <code>execute()</code> has been called
+ * at least once, it is no longer possible to add additional
+ * {@link Command}s; instead, an exception will be thrown.</p>
+ *
+ * @param command The {@link Command} to be added
+ *
+ * @exception IllegalArgumentException if <code>command</code>
+ * is <code>null</code>
+ * @exception IllegalStateException if this {@link Chain} has already
+ * been executed at least once, so no further configuration is allowed
+ */
+ void addCommand( Command command );
+
+ /**
+ * <p>Execute the processing represented by this {@link Chain} according
+ * to the following algorithm.</p>
+ * <ul>
+ * <li>If there are no configured {@link Command}s in the {@link Chain},
+ * return <code>false</code>.</li>
+ * <li>Call the <code>execute()</code> method of each {@link Command}
+ * configured on this chain, in the order they were added via calls
+ * to the <code>addCommand()</code> method, until the end of the
+ * configured {@link Command}s is encountered, or until one of
+ * the executed {@link Command}s returns <code>true</code>
+ * or throws an exception.</li>
+ * <li>Walk backwards through the {@link Command}s whose
+ * <code>execute()</code> methods, starting with the last one that
+ * was executed. If this {@link Command} instance is also a
+ * {@link Filter}, call its <code>postprocess()</code> method,
+ * discarding any exception that is thrown.</li>
+ * <li>If the last {@link Command} whose <code>execute()</code> method
+ * was called threw an exception, rethrow that exception.</li>
+ * <li>Otherwise, return the value returned by the <code>execute()</code>
+ * method of the last {@link Command} that was executed. This will be
+ * <code>true</code> if the last {@link Command} indicated that
+ * processing of this {@link Context} has been completed, or
+ * <code>false</code> if none of the called {@link Command}s
+ * returned <code>true</code>.</li>
+ * </ul>
+ *
+ * @param context The {@link Context} to be processed by this
+ * {@link Chain}
+ *
+ * @exception Exception if thrown by one of the {@link Command}s
+ * in this {@link Chain} but not handled by a <code>postprocess()</code>
+ * method of a {@link Filter}
+ * @exception IllegalArgumentException if <code>context</code>
+ * is <code>null</code>
+ *
+ * @return <code>true</code> if the processing of this {@link Context}
+ * has been completed, or <code>false</code> if the processing
+ * of this {@link Context} should be delegated to a subsequent
+ * {@link Command} in an enclosing {@link Chain}
+ */
+ boolean execute( Context context ) throws Exception;
+}
\ No newline at end of file
Propchange: directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Chain.java
------------------------------------------------------------------------------
svn:keywords = HeadURL Id LastChangedBy LastChangedDate LastChangedRevision
Added: directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Command.java
URL: http://svn.apache.org/viewcvs/directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Command.java?rev=355004&view=auto
==============================================================================
--- directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Command.java (added)
+++ directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Command.java Wed Dec 7 22:31:40 2005
@@ -0,0 +1,100 @@
+/*
+ * Copyright 2003-2004 The Apache Software Foundation
+ *
+ * Licensed 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.protocol.common.chain;
+
+/**
+ * <p>A {@link Command} encapsulates a unit of processing work to be
+ * performed, whose purpose is to examine and/or modify the state of a
+ * transaction that is represented by a {@link Context}. Individual
+ * {@link Command}s can be assembled into a {@link Chain}, which allows
+ * them to either complete the required processing or delegate further
+ * processing to the next {@link Command} in the {@link Chain}.</p>
+ *
+ * <p>{@link Command} implementations should be designed in a thread-safe
+ * manner, suitable for inclusion in multiple {@link Chain}s that might be
+ * processed by different threads simultaneously. In general, this implies
+ * that {@link Command} classes should not maintain state information in
+ * instance variables. Instead, state information should be maintained via
+ * suitable modifications to the attributes of the {@link Context} that is
+ * passed to the <code>execute()</code> command.</p>
+ *
+ * <p>{@link Command} implementations typically retrieve and store state
+ * information in the {@link Context} instance that is passed as a parameter
+ * to the <code>execute()</code> method, using particular keys into the
+ * <code>Map</code> that can be acquired via
+ * <code>Context.getAttributes()</code>. To improve interoperability of
+ * {@link Command} implementations, a useful design pattern is to expose the
+ * key values used as JavaBeans properties of the {@link Command}
+ * implementation class itself. For example, a {@link Command} that requires
+ * an input and an output key might implement the following properties:</p>
+ *
+ * <pre>
+ * private String inputKey = "input";
+ * public String getInputKey() {
+ * return (this.inputKey);
+ * }
+ * public void setInputKey(String inputKey) {
+ * this.inputKey = inputKey;
+ * }
+ *
+ * private String outputKey = "output";
+ * public String getOutputKey() {
+ * return (this.outputKey);
+ * }
+ * public void setOutputKey(String outputKey) {
+ * this.outputKey = outputKey;
+ * }
+ * </pre>
+ *
+ * <p>And the operation of accessing the "input" information in the context
+ * would be executed by calling:</p>
+ *
+ * <pre>
+ * String input = (String) context.get(getInputKey());
+ * </pre>
+ *
+ * <p>instead of hard coding the attribute name. The use of the "Key"
+ * suffix on such property names is a useful convention to identify properties
+ * being used in this fashion, as opposed to JavaBeans properties that simply
+ * configure the internal operation of this {@link Command}.</p>
+ *
+ * @author Craig R. McClanahan
+ * @version $Revision$ $Date$
+ */
+public interface Command
+{
+ /**
+ * <p>Execute a unit of processing work to be performed. This
+ * {@link Command} may either complete the required processing
+ * and return <code>true</code>, or delegate remaining processing
+ * to the next {@link Command} in a {@link Chain} containing this
+ * {@link Command} by returning <code>false</code>
+ *
+ * @param context The {@link Context} to be processed by this
+ * {@link Command}
+ *
+ * @exception Exception general purpose exception return
+ * to indicate abnormal termination
+ * @exception IllegalArgumentException if <code>context</code>
+ * is <code>null</code>
+ *
+ * @return <code>true</code> if the processing of this {@link Context}
+ * has been completed, or <code>false</code> if the processing
+ * of this {@link Context} should be delegated to a subsequent
+ * {@link Command} in an enclosing {@link Chain}
+ */
+ boolean execute( Context context ) throws Exception;
+}
\ No newline at end of file
Propchange: directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Command.java
------------------------------------------------------------------------------
svn:keywords = HeadURL Id LastChangedBy LastChangedDate LastChangedRevision
Added: directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Context.java
URL: http://svn.apache.org/viewcvs/directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Context.java?rev=355004&view=auto
==============================================================================
--- directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Context.java (added)
+++ directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Context.java Wed Dec 7 22:31:40 2005
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2003-2004 The Apache Software Foundation
+ *
+ * Licensed 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.protocol.common.chain;
+
+import java.util.Map;
+
+/**
+ * <p>A {@link Context} represents the state information that is
+ * accessed and manipulated by the execution of a {@link Command} or a
+ * {@link Chain}. Specialized implementations of {@link Context} will
+ * typically add JavaBeans properties that contain typesafe accessors
+ * to information that is relevant to a particular use case for this
+ * context, and/or add operations that affect the state information
+ * that is saved in the context.</p>
+ *
+ * <p>Implementations of {@link Context} must also implement all of the
+ * required and optional contracts of the <code>java.util.Map</code>
+ * interface.</p>
+ *
+ * <p>It is strongly recommended, but not required, that JavaBeans
+ * properties added to a particular {@link Context} implementation exhibit
+ * <em>Attribute-Property Transparency</em>. In other words,
+ * a value stored via a call to <code>setFoo(value)</code> should be visible
+ * by calling <code>get("foo")</code>, and a value stored
+ * via a call to <code>put("foo", value)</code> should be
+ * visible by calling <code>getFoo()</code>. If your {@link Context}
+ * implementation class exhibits this featue, it becomes easier to reuse the
+ * implementation in multiple environments, without the need to cast to a
+ * particular implementation class in order to access the property getter
+ * and setter methods.</p>
+ *
+ * <p>To protect applications from evolution of this interface, specialized
+ * implementations of {@link Context} should generally be created by extending
+ * the provided base class ({@link org.apache.protocol.common.chain.impl.ContextBase})
+ * rather than directly implementing this interface.</p>
+ *
+ * <p>Applications should <strong>NOT</strong> assume that
+ * {@link Context} implementations, or the values stored in its
+ * attributes, may be accessed from multiple threads
+ * simultaneously unless this is explicitly documented for a particular
+ * implementation.</p>
+ *
+ * @author Craig R. McClanahan
+ * @version $Revision$ $Date$
+ */
+public interface Context extends Map
+{
+
+}
\ No newline at end of file
Propchange: directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Context.java
------------------------------------------------------------------------------
svn:keywords = HeadURL Id LastChangedBy LastChangedDate LastChangedRevision
Added: directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Filter.java
URL: http://svn.apache.org/viewcvs/directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Filter.java?rev=355004&view=auto
==============================================================================
--- directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Filter.java (added)
+++ directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Filter.java Wed Dec 7 22:31:40 2005
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2003-2004 The Apache Software Foundation
+ *
+ * Licensed 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.protocol.common.chain;
+
+/**
+ * <p>A {@link Filter} is a specialized {@link Command} that also expects
+ * the {@link Chain} that is executing it to call the
+ * <code>postprocess()</code> method if it called the <code>execute()</code>
+ * method. This promise must be fulfilled in spite of any possible
+ * exceptions thrown by the <code>execute()</code> method of this
+ * {@link Command}, or any subsequent {@link Command} whose
+ * <code>execute()</code> method was called. The owning {@link Chain}
+ * must call the <code>postprocess()</code> method of each {@link Filter}
+ * in a {@link Chain} in reverse order of the invocation of their
+ * <code>execute()</code> methods.</p>
+ *
+ * <p>The most common use case for a {@link Filter}, as opposed to a
+ * {@link Command}, is where potentially expensive resources must be acquired
+ * and held until the processing of a particular request has been completed,
+ * even it execution is delegated to a subsequent {@link Command} via the
+ * <code>execute()</code> returning <code>false</code>. A {@link Filter}
+ * can reliably release such resources in the <code>postprocess()</code>
+ * method, which is guaranteed to be called by the owning {@link Chain}.</p>
+ *
+ * @author Craig R. McClanahan
+ * @version $Revision$ $Date$
+ */
+public interface Filter extends Command
+{
+ /**
+ * <p>Execute any cleanup activities, such as releasing resources that
+ * were acquired during the <code>execute()</code> method of this
+ * {@link Filter} instance.</p>
+ *
+ * @param context The {@link Context} to be processed by this
+ * {@link Filter}
+ * @param exception The <code>Exception</code> (if any) that was thrown
+ * by the last {@link Command} that was executed; otherwise
+ * <code>null</code>
+ *
+ * @exception IllegalArgumentException if <code>context</code>
+ * is <code>null</code>
+ *
+ * @return If a non-null <code>exception</code> was "handled" by this
+ * method (and therefore need not be rethrown), return <code>true</code>;
+ * otherwise return <code>false</code>
+ */
+ boolean postprocess( Context context, Exception exception );
+}
Propchange: directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/Filter.java
------------------------------------------------------------------------------
svn:keywords = HeadURL Id LastChangedBy LastChangedDate LastChangedRevision
Added: directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/impl/ChainBase.java
URL: http://svn.apache.org/viewcvs/directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/impl/ChainBase.java?rev=355004&view=auto
==============================================================================
--- directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/impl/ChainBase.java (added)
+++ directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/impl/ChainBase.java Wed Dec 7 22:31:40 2005
@@ -0,0 +1,225 @@
+/*
+ * Copyright 1999-2004 The Apache Software Foundation
+ *
+ * Licensed 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.protocol.common.chain.impl;
+
+import java.util.Collection;
+import java.util.Iterator;
+
+import org.apache.protocol.common.chain.Chain;
+import org.apache.protocol.common.chain.Command;
+import org.apache.protocol.common.chain.Context;
+import org.apache.protocol.common.chain.Filter;
+
+/**
+ * <p>Convenience base class for {@link Chain} implementations.</p>
+ *
+ * @author Craig R. McClanahan
+ * @version $Revision$ $Date$
+ */
+public class ChainBase implements Chain
+{
+ // ----------------------------------------------------------- Constructors
+
+ /**
+ * <p>Construct a {@link Chain} with no configured {@link Command}s.</p>
+ */
+ public ChainBase()
+ {
+
+ }
+
+ /**
+ * <p>Construct a {@link Chain} configured with the specified
+ * {@link Command}.</p>
+ *
+ * @param command The {@link Command} to be configured
+ *
+ * @exception IllegalArgumentException if <code>command</code>
+ * is <code>null</code>
+ */
+ public ChainBase( Command command )
+ {
+ addCommand( command );
+ }
+
+ /**
+ * <p>Construct a {@link Chain} configured with the specified
+ * {@link Command}s.</p>
+ *
+ * @param commands The {@link Command}s to be configured
+ *
+ * @exception IllegalArgumentException if <code>commands</code>,
+ * or one of the individual {@link Command} elements,
+ * is <code>null</code>
+ */
+ public ChainBase( Command[] commands )
+ {
+ if ( commands == null )
+ {
+ throw new IllegalArgumentException();
+ }
+
+ for ( int i = 0; i < commands.length; i++ )
+ {
+ addCommand( commands[ i ] );
+ }
+ }
+
+ /**
+ * <p>Construct a {@link Chain} configured with the specified
+ * {@link Command}s.</p>
+ *
+ * @param commands The {@link Command}s to be configured
+ *
+ * @exception IllegalArgumentException if <code>commands</code>,
+ * or one of the individual {@link Command} elements,
+ * is <code>null</code>
+ */
+ public ChainBase( Collection commands )
+ {
+ if ( commands == null )
+ {
+ throw new IllegalArgumentException();
+ }
+
+ Iterator elements = commands.iterator();
+ while ( elements.hasNext() )
+ {
+ addCommand( (Command) elements.next() );
+ }
+ }
+
+ // ----------------------------------------------------- Instance Variables
+
+ /**
+ * <p>The list of {@link Command}s configured for this {@link Chain}, in
+ * the order in which they may delegate processing to the remainder of
+ * the {@link Chain}.</p>
+ */
+ protected Command[] commands = new Command[ 0 ];
+
+ /**
+ * <p>Flag indicating whether the configuration of our commands list
+ * has been frozen by a call to the <code>execute()</code> method.</p>
+ */
+ protected boolean frozen = false;
+
+ // ---------------------------------------------------------- Chain Methods
+
+ // Documented in Chain interface
+ public void addCommand( Command command )
+ {
+ if ( command == null )
+ {
+ throw new IllegalArgumentException();
+ }
+
+ if ( frozen )
+ {
+ throw new IllegalStateException();
+ }
+
+ Command[] results = new Command[ commands.length + 1 ];
+ System.arraycopy( commands, 0, results, 0, commands.length );
+ results[ commands.length ] = command;
+ commands = results;
+ }
+
+ // Documented in Chain interface
+ public boolean execute( Context context ) throws Exception
+ {
+ // Verify our parameters
+ if ( context == null )
+ {
+ throw new IllegalArgumentException();
+ }
+
+ // Freeze the configuration of the command list
+ frozen = true;
+
+ // Execute the commands in this list until one returns true
+ // or throws an exception
+ boolean saveResult = false;
+ Exception saveException = null;
+ int i = 0;
+ int n = commands.length;
+ ;
+ for ( i = 0; i < n; i++ )
+ {
+ try
+ {
+ saveResult = commands[ i ].execute( context );
+ if ( saveResult )
+ {
+ break;
+ }
+ }
+ catch ( Exception e )
+ {
+ saveException = e;
+ break;
+ }
+ }
+
+ // Call postprocess methods on Filters in reverse order
+ if ( i >= n )
+ { // Fell off the end of the chain
+ i--;
+ }
+ boolean handled = false;
+ boolean result = false;
+ for ( int j = i; j >= 0; j-- )
+ {
+ if ( commands[ j ] instanceof Filter )
+ {
+ try
+ {
+ result = ( (Filter) commands[ j ] ).postprocess( context, saveException );
+ if ( result )
+ {
+ handled = true;
+ }
+ }
+ catch ( Exception e )
+ {
+ ; // Silently ignore
+ }
+ }
+ }
+
+ // Return the exception or result state from the last execute()
+ if ( ( saveException != null ) && !handled )
+ {
+ throw saveException;
+ }
+ else
+ {
+ return ( saveResult );
+ }
+ }
+
+ // -------------------------------------------------------- Package Methods
+
+ /**
+ * <p>Return an array of the configured {@link Command}s for this
+ * {@link Chain}. This method is package private, and is used only
+ * for the unit tests.</p>
+ */
+ Command[] getCommands()
+ {
+ return ( commands );
+ }
+}
\ No newline at end of file
Propchange: directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/impl/ChainBase.java
------------------------------------------------------------------------------
svn:keywords = HeadURL Id LastChangedBy LastChangedDate LastChangedRevision
Added: directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/impl/CommandBase.java
URL: http://svn.apache.org/viewcvs/directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/impl/CommandBase.java?rev=355004&view=auto
==============================================================================
--- directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/impl/CommandBase.java (added)
+++ directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/impl/CommandBase.java Wed Dec 7 22:31:40 2005
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2005 The Apache Software Foundation
+ *
+ * Licensed 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.protocol.common.chain.impl;
+
+import org.apache.protocol.common.chain.Command;
+
+/**
+ * <p>Convenience base class for {@link Command} implementations.</p>
+ *
+ * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
+ * @version $Rev$
+ */
+public abstract class CommandBase implements Command
+{
+ public static final boolean STOP_CHAIN = true;
+ public static final boolean CONTINUE_CHAIN = false;
+}
\ No newline at end of file
Propchange: directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/impl/CommandBase.java
------------------------------------------------------------------------------
svn:keywords = HeadURL Id LastChangedBy LastChangedDate LastChangedRevision
Added: directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/impl/ContextBase.java
URL: http://svn.apache.org/viewcvs/directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/impl/ContextBase.java?rev=355004&view=auto
==============================================================================
--- directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/impl/ContextBase.java (added)
+++ directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/impl/ContextBase.java Wed Dec 7 22:31:40 2005
@@ -0,0 +1,819 @@
+/*
+ * Copyright 1999-2004 The Apache Software Foundation
+ *
+ * Licensed 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.protocol.common.chain.impl;
+
+import java.beans.IntrospectionException;
+import java.beans.Introspector;
+import java.beans.PropertyDescriptor;
+import java.lang.reflect.Method;
+import java.util.AbstractCollection;
+import java.util.AbstractSet;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
+import java.util.Map.Entry;
+
+import org.apache.protocol.common.chain.Context;
+
+/**
+ * <p>Convenience base class for {@link Context} implementations.</p>
+ *
+ * <p>In addition to the minimal functionality required by the {@link Context}
+ * interface, this class implements the recommended support for
+ * <em>Attribute-Property Transparency</p>. This is implemented by
+ * analyzing the available JavaBeans properties of this class (or its
+ * subclass), exposes them as key-value pairs in the <code>Map</code>,
+ * with the key being the name of the property itself.</p>
+ *
+ * <p><strong>IMPLEMENTATION NOTE</strong> - Because <code>empty</code> is a
+ * read-only property defined by the <code>Map</code> interface, it may not
+ * be utilized as an attribute key or property name.</p>
+ *
+ * @author Craig R. McClanahan
+ * @version $Revision$ $Date$
+ */
+public class ContextBase extends HashMap implements Context
+{
+ // ------------------------------------------------------------ Constructors
+
+ /**
+ * Default, no argument constructor.
+ */
+ public ContextBase()
+ {
+ super();
+ initialize();
+ }
+
+ /**
+ * <p>Initialize the contents of this {@link Context} by copying the
+ * values from the specified <code>Map</code>. Any keys in <code>map</code>
+ * that correspond to local properties will cause the setter method for
+ * that property to be called.</p>
+ *
+ * @param map Map whose key-value pairs are added
+ *
+ * @exception IllegalArgumentException if an exception is thrown
+ * writing a local property value
+ * @exception UnsupportedOperationException if a local property does not
+ * have a write method.
+ */
+ public ContextBase( Map map )
+ {
+ super( map );
+ initialize();
+ putAll( map );
+ }
+
+ // ------------------------------------------------------ Instance Variables
+
+ /**
+ * <p>The <code>PropertyDescriptor</code>s for all JavaBeans properties
+ * of this {@link Context} implementation class, keyed by property name.
+ * This collection is allocated only if there are any JavaBeans
+ * properties.</p>
+ */
+ private Map descriptors = null;
+
+ /**
+ * <p>The same <code>PropertyDescriptor</code>s as an array.</p>
+ */
+ private PropertyDescriptor[] pd = null;
+
+ /**
+ * <p>Distinguished singleton value that is stored in the map for each
+ * key that is actually a property. This value is used to ensure that
+ * <code>equals()</code> comparisons will always fail.</p>
+ */
+ private static Object singleton;
+
+ static
+ {
+ singleton = new Object()
+ {
+ public boolean equals( Object object )
+ {
+ return ( false );
+ }
+ };
+ }
+
+ /**
+ * <p>Zero-length array of parameter values for calling property getters.
+ * </p>
+ */
+ private static Object[] zeroParams = new Object[ 0 ];
+
+ // ------------------------------------------------------------- Map Methods
+
+ /**
+ * <p>Override the default <code>Map</code> behavior to clear all keys and
+ * values except those corresponding to JavaBeans properties.</p>
+ */
+ public void clear()
+ {
+ if ( descriptors == null )
+ {
+ super.clear();
+ }
+ else
+ {
+ Iterator keys = keySet().iterator();
+ while ( keys.hasNext() )
+ {
+ Object key = keys.next();
+ if ( !descriptors.containsKey( key ) )
+ {
+ keys.remove();
+ }
+ }
+ }
+ }
+
+ /**
+ * <p>Override the default <code>Map</code> behavior to return
+ * <code>true</code> if the specified value is present in either the
+ * underlying <code>Map</code> or one of the local property values.</p>
+ *
+ * @exception IllegalArgumentException if a property getter
+ * throws an exception
+ */
+ public boolean containsValue( Object value )
+ {
+ // Case 1 -- no local properties
+ if ( descriptors == null )
+ {
+ return ( super.containsValue( value ) );
+ }
+ // Case 2 -- value found in the underlying Map
+ else
+ if ( super.containsValue( value ) )
+ {
+ return ( true );
+ }
+
+ // Case 3 -- check the values of our readable properties
+ for ( int i = 0; i < pd.length; i++ )
+ {
+ if ( pd[ i ].getReadMethod() != null )
+ {
+ Object prop = readProperty( pd[ i ] );
+ if ( value == null )
+ {
+ if ( prop == null )
+ {
+ return ( true );
+ }
+ }
+ else
+ if ( value.equals( prop ) )
+ {
+ return ( true );
+ }
+ }
+ }
+
+ return ( false );
+ }
+
+ /**
+ * <p>Override the default <code>Map</code> behavior to return a
+ * <code>Set</code> that meets the specified default behavior except
+ * for attempts to remove the key for a property of the {@link Context}
+ * implementation class, which will throw
+ * <code>UnsupportedOperationException</code>.</p>
+ */
+ public Set entrySet()
+ {
+ return ( new EntrySetImpl() );
+ }
+
+ /**
+ * <p>Override the default <code>Map</code> behavior to return the value
+ * of a local property if the specified key matches a local property name.
+ * </p>
+ *
+ * <p><strong>IMPLEMENTATION NOTE</strong> - If the specified
+ * <code>key</code> identifies a write-only property, <code>null</code>
+ * will arbitrarily be returned, in order to avoid difficulties implementing
+ * the contracts of the <code>Map</code> interface.</p>
+ *
+ * @param key Key of the value to be returned
+ *
+ * @exception IllegalArgumentException if an exception is thrown
+ * reading this local property value
+ * @exception UnsupportedOperationException if this local property does not
+ * have a read method.
+ */
+ public Object get( Object key )
+ {
+ // Case 1 -- no local properties
+ if ( descriptors == null )
+ {
+ return ( super.get( key ) );
+ }
+
+ // Case 2 -- this is a local property
+ if ( key != null )
+ {
+ PropertyDescriptor descriptor = (PropertyDescriptor) descriptors.get( key );
+ if ( descriptor != null )
+ {
+ if ( descriptor.getReadMethod() != null )
+ {
+ return ( readProperty( descriptor ) );
+ }
+ else
+ {
+ return ( null );
+ }
+ }
+ }
+
+ // Case 3 -- retrieve value from our underlying Map
+ return ( super.get( key ) );
+ }
+
+ /**
+ * <p>Override the default <code>Map</code> behavior to return
+ * <code>true</code> if the underlying <code>Map</code> only contains
+ * key-value pairs for local properties (if any).</p>
+ */
+ public boolean isEmpty()
+ {
+ // Case 1 -- no local properties
+ if ( descriptors == null )
+ {
+ return ( super.isEmpty() );
+ }
+
+ // Case 2 -- compare key count to property count
+ return ( super.size() <= descriptors.size() );
+
+ }
+
+ /**
+ * <p>Override the default <code>Map</code> behavior to return a
+ * <code>Set</code> that meets the specified default behavior except
+ * for attempts to remove the key for a property of the {@link Context}
+ * implementation class, which will throw
+ * <code>UnsupportedOperationException</code>.</p>
+ */
+ public Set keySet()
+ {
+ return ( super.keySet() );
+ }
+
+ /**
+ * <p>Override the default <code>Map</code> behavior to set the value
+ * of a local property if the specified key matches a local property name.
+ * </p>
+ *
+ * @param key Key of the value to be stored or replaced
+ * @param value New value to be stored
+ *
+ * @exception IllegalArgumentException if an exception is thrown
+ * reading or wrting this local property value
+ * @exception UnsupportedOperationException if this local property does not
+ * have both a read method and a write method
+ */
+ public Object put( Object key, Object value )
+ {
+ // Case 1 -- no local properties
+ if ( descriptors == null )
+ {
+ return ( super.put( key, value ) );
+ }
+
+ // Case 2 -- this is a local property
+ if ( key != null )
+ {
+ PropertyDescriptor descriptor = (PropertyDescriptor) descriptors.get( key );
+ if ( descriptor != null )
+ {
+ Object previous = null;
+ if ( descriptor.getReadMethod() != null )
+ {
+ previous = readProperty( descriptor );
+ }
+ writeProperty( descriptor, value );
+ return ( previous );
+ }
+ }
+
+ // Case 3 -- store or replace value in our underlying map
+ return ( super.put( key, value ) );
+ }
+
+ /**
+ * <p>Override the default <code>Map</code> behavior to call the
+ * <code>put()</code> method individually for each key-value pair
+ * in the specified <code>Map</code>.</p>
+ *
+ * @param map <code>Map</code> containing key-value pairs to store
+ * (or replace)
+ *
+ * @exception IllegalArgumentException if an exception is thrown
+ * reading or wrting a local property value
+ * @exception UnsupportedOperationException if a local property does not
+ * have both a read method and a write method
+ */
+ public void putAll( Map map )
+ {
+ Iterator pairs = map.entrySet().iterator();
+ while ( pairs.hasNext() )
+ {
+ Map.Entry pair = (Map.Entry) pairs.next();
+ put( pair.getKey(), pair.getValue() );
+ }
+ }
+
+ /**
+ * <p>Override the default <code>Map</code> behavior to throw
+ * <code>UnsupportedOperationException</code> on any attempt to
+ * remove a key that is the name of a local property.</p>
+ *
+ * @param key Key to be removed
+ *
+ * @exception UnsupportedOperationException if the specified
+ * <code>key</code> matches the name of a local property
+ */
+ public Object remove( Object key )
+ {
+ // Case 1 -- no local properties
+ if ( descriptors == null )
+ {
+ return ( super.remove( key ) );
+ }
+
+ // Case 2 -- this is a local property
+ if ( key != null )
+ {
+ PropertyDescriptor descriptor = (PropertyDescriptor) descriptors.get( key );
+ if ( descriptor != null )
+ {
+ throw new UnsupportedOperationException( "Local property '" + key + "' cannot be removed" );
+ }
+ }
+
+ // Case 3 -- remove from underlying Map
+ return ( super.remove( key ) );
+ }
+
+ /**
+ * <p>Override the default <code>Map</code> behavior to return a
+ * <code>Collection</code> that meets the specified default behavior except
+ * for attempts to remove the key for a property of the {@link Context}
+ * implementation class, which will throw
+ * <code>UnsupportedOperationException</code>.</p>
+ */
+ public Collection values()
+ {
+ return ( new ValuesImpl() );
+ }
+
+ // --------------------------------------------------------- Private Methods
+
+ /**
+ * <p>Eliminate the specified property descriptor from the list of
+ * property descriptors in <code>pd</code>.</p>
+ *
+ * @param name Name of the property to eliminate
+ *
+ * @exception IllegalArgumentException if the specified property name
+ * is not present
+ */
+ private void eliminate( String name )
+ {
+ int j = -1;
+ for ( int i = 0; i < pd.length; i++ )
+ {
+ if ( name.equals( pd[ i ].getName() ) )
+ {
+ j = i;
+ break;
+ }
+ }
+
+ if ( j < 0 )
+ {
+ throw new IllegalArgumentException( "Property '" + name + "' is not present" );
+ }
+
+ PropertyDescriptor[] results = new PropertyDescriptor[ pd.length - 1 ];
+ System.arraycopy( pd, 0, results, 0, j );
+ System.arraycopy( pd, j + 1, results, j, pd.length - ( j + 1 ) );
+ pd = results;
+ }
+
+ /**
+ * <p>Return an <code>Iterator</code> over the set of <code>Map.Entry</code>
+ * objects representing our key-value pairs.</p>
+ */
+ private Iterator entriesIterator()
+ {
+ return ( new EntrySetIterator() );
+ }
+
+ /**
+ * <p>Return a <code>Map.Entry</code> for the specified key value, if it
+ * is present; otherwise, return <code>null</code>.</p>
+ *
+ * @param key Attribute key or property name
+ */
+ private Map.Entry entry( Object key )
+ {
+ if ( containsKey( key ) )
+ {
+ return ( new MapEntryImpl( key, get( key ) ) );
+ }
+ else
+ {
+ return ( null );
+ }
+ }
+
+ /**
+ * <p>Customize the contents of our underlying <code>Map</code> so that
+ * it contains keys corresponding to all of the JavaBeans properties of
+ * the {@link Context} implementation class.</p>
+ *
+ *
+ * @exception IllegalArgumentException if an exception is thrown
+ * writing this local property value
+ * @exception UnsupportedOperationException if this local property does not
+ * have a write method.
+ */
+ private void initialize()
+ {
+ // Retrieve the set of property descriptors for this Context class
+ try
+ {
+ pd = Introspector.getBeanInfo( getClass() ).getPropertyDescriptors();
+ }
+ catch ( IntrospectionException e )
+ {
+ pd = new PropertyDescriptor[ 0 ]; // Should never happen
+ }
+ eliminate( "class" ); // Because of "getClass()"
+ eliminate( "empty" ); // Because of "isEmpty()"
+
+ // Initialize the underlying Map contents
+ if ( pd.length > 0 )
+ {
+ descriptors = new HashMap();
+ for ( int i = 0; i < pd.length; i++ )
+ {
+ descriptors.put( pd[ i ].getName(), pd[ i ] );
+ super.put( pd[ i ].getName(), singleton );
+ }
+ }
+
+ }
+
+ /**
+ * <p>Get and return the value for the specified property.</p>
+ *
+ * @param descriptor <code>PropertyDescriptor</code> for the
+ * specified property
+ *
+ * @exception IllegalArgumentException if an exception is thrown
+ * reading this local property value
+ * @exception UnsupportedOperationException if this local property does not
+ * have a read method.
+ */
+ private Object readProperty( PropertyDescriptor descriptor )
+ {
+ try
+ {
+ Method method = descriptor.getReadMethod();
+ if ( method == null )
+ {
+ throw new UnsupportedOperationException( "Property '" + descriptor.getName() + "' is not readable" );
+ }
+ return ( method.invoke( this, zeroParams ) );
+ }
+ catch ( Exception e )
+ {
+ throw new UnsupportedOperationException( "Exception reading property '" + descriptor.getName() + "': "
+ + e.getMessage() );
+ }
+ }
+
+ /**
+ * <p>Remove the specified key-value pair, if it exists, and return
+ * <code>true</code>. If this pair does not exist, return
+ * <code>false</code>.</p>
+ *
+ * @param entry Key-value pair to be removed
+ *
+ * @exception UnsupportedOperationException if the specified key
+ * identifies a property instead of an attribute
+ */
+ private boolean remove( Map.Entry entry )
+ {
+ Map.Entry actual = entry( entry.getKey() );
+ if ( actual == null )
+ {
+ return ( false );
+ }
+ else
+ if ( !entry.equals( actual ) )
+ {
+ return ( false );
+ }
+ else
+ {
+ remove( entry.getKey() );
+ return ( true );
+ }
+ }
+
+ /**
+ * <p>Return an <code>Iterator</code> over the set of values in this
+ * <code>Map</code>.</p>
+ */
+ private Iterator valuesIterator()
+ {
+ return ( new ValuesIterator() );
+ }
+
+ /**
+ * <p>Set the value for the specified property.</p>
+ *
+ * @param descriptor <code>PropertyDescriptor</code> for the
+ * specified property
+ * @param value The new value for this property (must be of the
+ * correct type)
+ *
+ * @exception IllegalArgumentException if an exception is thrown
+ * writing this local property value
+ * @exception UnsupportedOperationException if this local property does not
+ * have a write method.
+ */
+ private void writeProperty( PropertyDescriptor descriptor, Object value )
+ {
+ try
+ {
+ Method method = descriptor.getWriteMethod();
+ if ( method == null )
+ {
+ throw new UnsupportedOperationException( "Property '" + descriptor.getName() + "' is not writeable" );
+ }
+ method.invoke( this, new Object[] { value } );
+ }
+ catch ( Exception e )
+ {
+ throw new UnsupportedOperationException( "Exception writing property '" + descriptor.getName() + "': "
+ + e.getMessage() );
+ }
+ }
+
+ // --------------------------------------------------------- Private Classes
+
+ /**
+ * <p>Private implementation of <code>Set</code> that implements the
+ * semantics required for the value returned by <code>entrySet()</code>.</p>
+ */
+ private class EntrySetImpl extends AbstractSet
+ {
+ public void clear()
+ {
+ ContextBase.this.clear();
+ }
+
+ public boolean contains( Object obj )
+ {
+ if ( !( obj instanceof Map.Entry ) )
+ {
+ return ( false );
+ }
+ Map.Entry entry = (Map.Entry) obj;
+ Entry actual = ContextBase.this.entry( entry.getKey() );
+ if ( actual != null )
+ {
+ return ( actual.equals( entry ) );
+ }
+ else
+ {
+ return ( false );
+ }
+ }
+
+ public boolean isEmpty()
+ {
+ return ( ContextBase.this.isEmpty() );
+ }
+
+ public Iterator iterator()
+ {
+ return ( ContextBase.this.entriesIterator() );
+ }
+
+ public boolean remove( Object obj )
+ {
+ if ( obj instanceof Map.Entry )
+ {
+ return ( ContextBase.this.remove( (Map.Entry) obj ) );
+ }
+ else
+ {
+ return ( false );
+ }
+ }
+
+ public int size()
+ {
+ return ( ContextBase.this.size() );
+ }
+ }
+
+ /**
+ * <p>Private implementation of <code>Iterator</code> for the
+ * <code>Set</code> returned by <code>entrySet()</code>.</p>
+ */
+ private class EntrySetIterator implements Iterator
+ {
+ Map.Entry entry = null;
+ private Iterator keys = ContextBase.this.keySet().iterator();
+
+ public boolean hasNext()
+ {
+ return ( keys.hasNext() );
+ }
+
+ public Object next()
+ {
+ entry = ContextBase.this.entry( keys.next() );
+ return ( entry );
+ }
+
+ public void remove()
+ {
+ ContextBase.this.remove( entry );
+ }
+
+ }
+
+ /**
+ * <p>Private implementation of <code>Map.Entry</code> for each item in
+ * <code>EntrySetImpl</code>.</p>
+ */
+ private class MapEntryImpl implements Map.Entry
+ {
+ MapEntryImpl( Object key, Object value )
+ {
+ this.key = key;
+ this.value = value;
+ }
+
+ private Object key;
+ private Object value;
+
+ public boolean equals( Object obj )
+ {
+ if ( obj == null )
+ {
+ return ( false );
+ }
+ else
+ if ( !( obj instanceof Map.Entry ) )
+ {
+ return ( false );
+ }
+ Map.Entry entry = (Map.Entry) obj;
+ if ( key == null )
+ {
+ return ( entry.getKey() == null );
+ }
+ if ( key.equals( entry.getKey() ) )
+ {
+ if ( value == null )
+ {
+ return ( entry.getValue() == null );
+ }
+ else
+ {
+ return ( value.equals( entry.getValue() ) );
+ }
+ }
+ else
+ {
+ return ( false );
+ }
+ }
+
+ public Object getKey()
+ {
+ return ( this.key );
+ }
+
+ public Object getValue()
+ {
+ return ( this.value );
+ }
+
+ public int hashCode()
+ {
+ return ( ( ( key == null ) ? 0 : key.hashCode() ) ^ ( ( value == null ) ? 0 : value.hashCode() ) );
+ }
+
+ public Object setValue( Object value )
+ {
+ Object previous = this.value;
+ ContextBase.this.put( this.key, value );
+ this.value = value;
+ return ( previous );
+ }
+ }
+
+ /**
+ * <p>Private implementation of <code>Collection</code> that implements the
+ * semantics required for the value returned by <code>values()</code>.</p>
+ */
+ private class ValuesImpl extends AbstractCollection
+ {
+ public void clear()
+ {
+ ContextBase.this.clear();
+ }
+
+ public boolean contains( Object obj )
+ {
+ if ( !( obj instanceof Map.Entry ) )
+ {
+ return ( false );
+ }
+ Map.Entry entry = (Map.Entry) obj;
+ return ( ContextBase.this.containsValue( entry.getValue() ) );
+ }
+
+ public boolean isEmpty()
+ {
+ return ( ContextBase.this.isEmpty() );
+ }
+
+ public Iterator iterator()
+ {
+ return ( ContextBase.this.valuesIterator() );
+ }
+
+ public boolean remove( Object obj )
+ {
+ if ( obj instanceof Map.Entry )
+ {
+ return ( ContextBase.this.remove( (Map.Entry) obj ) );
+ }
+ else
+ {
+ return ( false );
+ }
+ }
+
+ public int size()
+ {
+ return ( ContextBase.this.size() );
+ }
+ }
+
+ /**
+ * <p>Private implementation of <code>Iterator</code> for the
+ * <code>Collection</code> returned by <code>values()</code>.</p>
+ */
+ private class ValuesIterator implements Iterator
+ {
+ Map.Entry entry = null;
+ private Iterator keys = ContextBase.this.keySet().iterator();
+
+ public boolean hasNext()
+ {
+ return ( keys.hasNext() );
+ }
+
+ public Object next()
+ {
+ entry = ContextBase.this.entry( keys.next() );
+ return ( entry.getValue() );
+ }
+
+ public void remove()
+ {
+ ContextBase.this.remove( entry );
+ }
+ }
+}
\ No newline at end of file
Propchange: directory/shared/protocol/trunk/common/src/main/java/org/apache/protocol/common/chain/impl/ContextBase.java
------------------------------------------------------------------------------
svn:keywords = HeadURL Id LastChangedBy LastChangedDate LastChangedRevision