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package tsukuba_bunko.peko.scenario; |
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import java.io.Serializable; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.Set; |
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import tsukuba_bunko.peko.Logger; |
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import tsukuba_bunko.peko.session.Session; |
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public class SceneContext implements Serializable { |
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private static final long serialVersionUID = 1698890995605002291L; |
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protected String _sceneName = null; |
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protected String _sceneTitle = null; |
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protected Map _properties = null; |
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protected NextSceneMapping _nextSceneMapping = null; |
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transient protected Node _current = null; |
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protected Node _lastCommittedNode = null; |
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protected Set _sceneScopeFlags = null; |
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transient protected Session _session = null; |
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transient protected SceneProcessor _processor = null; |
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public SceneContext( String sceneName, Session session, SceneProcessor processor ) |
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{ |
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_sceneName = sceneName; |
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_session = session; |
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_processor = processor; |
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SceneContext previous = session.getSceneContext(); |
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if( previous != null ) { |
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_lastCommittedNode = previous.getLastCommittedNode(); |
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_properties = previous._properties; |
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_nextSceneMapping = previous.getNextSceneMapping(); |
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_sceneScopeFlags = previous._sceneScopeFlags; |
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} |
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else { |
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_nextSceneMapping = new NextSceneMapping(); |
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_sceneScopeFlags = new java.util.HashSet(); |
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} |
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} |
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public String getSceneName() |
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{ |
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return _sceneName; |
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} |
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public void setSceneTitle( String title ) |
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{ |
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_sceneTitle = title; |
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} |
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public String getSceneTitle() |
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{ |
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return _sceneTitle; |
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} |
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public Session getSession() |
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{ |
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return _session; |
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} |
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public SceneProcessor getSceneProcessor() |
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{ |
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return _processor; |
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} |
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public void setProperty( String name, String value ) |
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{ |
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if( _properties == null ) { |
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_properties = new java.util.HashMap( 17 ); |
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} |
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_properties.put( name, value ); |
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} |
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public String getProperty( String name ) |
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{ |
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if( _properties == null ) { |
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return null; |
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} |
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else { |
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return (String)_properties.get( name ); |
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} |
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} |
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public void setNextSceneMapping( NextSceneMapping mapping ) |
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{ |
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_nextSceneMapping = mapping; |
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} |
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public NextSceneMapping getNextSceneMapping() |
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{ |
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return _nextSceneMapping; |
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} |
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public String getNextSceneName() |
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{ |
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return _nextSceneMapping.getNextScene( this ); |
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} |
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public void pushNode( String nodeName ) |
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{ |
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if( _current == null ) { |
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_current = new Node( null, nodeName.intern(), 1 ); |
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} |
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else { |
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int position = _current.countSibling(nodeName) + 1; |
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Node child = new Node( _current, nodeName.intern(), position ); |
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_current.addChildNode( child ); |
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_current = child; |
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} |
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} |
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public void popNode() |
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{ |
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if( _current == null ) { |
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Logger.error( "[scenario] BUG! invalid state of SceneLog." ); |
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} |
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else { |
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_current.removeChildren(); |
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_current = _current.getParentNode(); |
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} |
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} |
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public void saveCurrentNode() |
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{ |
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_lastCommittedNode = _current; |
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} |
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public Node getLastCommittedNode() |
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{ |
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return _lastCommittedNode; |
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} |
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public boolean isCurrentNode( Node node ) |
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{ |
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if( node == _current ) { |
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return true; |
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} |
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else if( _current != null ) { |
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return _current.equals(node); |
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} |
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else { |
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return false; |
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} |
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} |
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public Node getCurrentNode() |
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{ |
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Node node = _current; |
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if( node == null ) { |
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return null; |
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} |
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else { |
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Node copy = new Node( null, node._nodeName, node._position ); |
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Node temp = copy; |
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while( (node = node.getParentNode()) != null ) { |
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temp._parent = new Node( null, node.getNodeName(), node.getPosition() ); |
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temp = temp.getParentNode(); |
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} |
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return copy; |
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} |
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} |
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public String getCurrentPath() |
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{ |
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if( _current != null ) { |
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return _current.getPath(); |
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} |
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else { |
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return "/"; |
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} |
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} |
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public void declareFlag( String flagID, FlagScope scope ) |
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{ |
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if( flagID == null ) { |
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throw new IllegalArgumentException(); |
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} |
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if( scope == FlagScope.SCENE ) { |
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_sceneScopeFlags.add( flagID ); |
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} |
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else if( scope == FlagScope.SESSION ) { |
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_session.declareSessionFlag( flagID ); |
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} |
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else if( scope == FlagScope.SYSTEM ) { |
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_session.declareSystemFlag( flagID ); |
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} |
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} |
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public void undeclareFlag( String flagID, FlagScope scope ) |
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{ |
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if( flagID == null ) { |
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throw new IllegalArgumentException(); |
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} |
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if( scope == FlagScope.SCENE ) { |
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_sceneScopeFlags.remove( flagID ); |
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} |
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else if( scope == FlagScope.SESSION ) { |
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_session.undeclareSessionFlag( flagID ); |
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} |
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else if( scope == FlagScope.SYSTEM ) { |
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_session.undeclareSystemFlag( flagID ); |
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} |
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} |
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public boolean isDeclaredFlag( String flagID ) |
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{ |
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if( _sceneScopeFlags.contains(flagID) ) { |
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return true; |
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} |
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else if( _session.isDeclaredSessionFlag(flagID) ) { |
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return true; |
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} |
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else if( _session.isDeclaredSystemFlag(flagID) ) { |
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return true; |
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} |
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else { |
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return false; |
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} |
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} |
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public boolean isDeclaredFlag( String flagID, FlagScope scope ) |
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{ |
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if( scope == FlagScope.SCENE ) { |
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return _sceneScopeFlags.contains( flagID ); |
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} |
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else if( scope == FlagScope.SESSION ) { |
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return _session.isDeclaredSessionFlag( flagID ); |
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} |
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else if( scope == FlagScope.SYSTEM ) { |
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return _session.isDeclaredSystemFlag( flagID ); |
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} |
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else { |
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return false; |
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} |
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} |
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public static class Node implements Serializable { |
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private static final long serialVersionUID = 7590190847826566241L; |
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protected Node _parent = null; |
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protected String _nodeName = null; |
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protected int _position = 0; |
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protected List _children = null; |
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public Node( Node parent, String nodeName, int position ) |
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{ |
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_parent = parent; |
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_nodeName = nodeName.intern(); |
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_position = position; |
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} |
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public Node getParentNode() |
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{ |
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return _parent; |
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} |
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public String getNodeName() |
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{ |
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return _nodeName; |
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} |
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public int getPosition() |
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{ |
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return _position; |
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} |
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public void addChildNode( Node child ) |
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{ |
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if( _children == null ) { |
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_children = new java.util.ArrayList(); |
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} |
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_children.add( child ); |
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} |
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public int countSibling( String nodeName ) |
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{ |
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if( _children == null ) { |
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return 0; |
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} |
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else { |
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String symbol = nodeName.intern(); |
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List children = _children; |
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int size = children.size(); |
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Node node = null; |
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int count = 0; |
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for( int i = 0; i < size; ++i ) { |
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node = (Node)children.get( i ); |
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if( node._nodeName == symbol ) { |
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count++; |
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} |
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} |
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return count; |
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} |
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} |
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public void removeChildren() |
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{ |
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if( _children != null ) { |
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List children = _children; |
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int size = children.size(); |
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for( int i = 0; i < size; ++i ) { |
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((Node)children.get(i)).removeChildren(); |
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} |
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children.clear(); |
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_children = null; |
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} |
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} |
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public String getPath() |
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{ |
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StringBuffer sink = new StringBuffer(); |
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Node node = this; |
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while( node != null ) { |
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sink.insert( 0, node ); |
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node = node.getParentNode(); |
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} |
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return new String(sink); |
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} |
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public boolean equals( Object obj ) |
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{ |
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if( obj instanceof Node ) { |
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Node target = (Node)obj; |
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Node node = this; |
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while( (node != null) && (target != class="keyword">null) ) { |
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if( !node._nodeName.equals(target._nodeName) || (node._position != target._position) ) { |
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return false; |
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} |
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node = node._parent; |
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target = target._parent; |
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} |
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return ((node == null) && (target == class="keyword">null)); |
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} |
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else { |
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return false; |
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} |
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} |
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public String toString() |
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{ |
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return "/" + _nodeName + "[" + _position + "]"; |
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} |
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} |
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} |