| /******************************************************************************* |
| * Copyright (c) 2001, 2007 Oracle Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Oracle Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jst.jsf.designtime.context; |
| |
| import java.util.Collections; |
| import java.util.Map; |
| |
| import org.eclipse.jst.jsf.context.symbol.ISymbol; |
| import org.eclipse.jst.jsf.context.symbol.source.ISymbolConstants; |
| |
| /** |
| * The parent of all IDTExternalContext implementations |
| * |
| * Clients must sub-class to create IDTExternalContext implementations |
| * |
| * @author cbateman |
| * |
| */ |
| public abstract class AbstractDTExternalContext implements IDTExternalContext |
| { |
| |
| /** |
| * Return a map of available symbols in each of the masked scopes |
| * indexed by symbol name |
| * |
| * Called by {@link #getMapForScope(int)} to satify the interface. |
| * If null is returned {@link #getMapForScope(int)} will automatically |
| * return an EMPTY_MAP. |
| * |
| * @param scopeMask |
| * @return the map of symbols |
| */ |
| protected abstract Map<String, ISymbol> doGetMapForScope(int scopeMask); |
| |
| |
| public final Map<String, ISymbol> getMapForScope(final int scopeMask) |
| { |
| Map<String, ISymbol> mapForScope = doGetMapForScope(scopeMask); |
| |
| if (mapForScope == null) |
| { |
| mapForScope = Collections.EMPTY_MAP; |
| } |
| else |
| { |
| mapForScope = Collections.unmodifiableMap(mapForScope); |
| } |
| return mapForScope; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jst.jsf.designtime.context.IDTExternalContext#getRequestMap() |
| */ |
| public final Map<String, ISymbol> getRequestMap() |
| { |
| return getMapForScope(ISymbolConstants.SYMBOL_SCOPE_REQUEST); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jst.jsf.designtime.context.IDTExternalContext#getSessionMap() |
| */ |
| public final Map<String, ISymbol> getSessionMap() |
| { |
| return getMapForScope(ISymbolConstants.SYMBOL_SCOPE_SESSION); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jst.jsf.designtime.context.IDTExternalContext#getApplicationMap() |
| */ |
| public final Map<String, ISymbol> getApplicationMap() |
| { |
| return getMapForScope(ISymbolConstants.SYMBOL_SCOPE_APPLICATION); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jst.jsf.designtime.context.IDTExternalContext#getNoneMap() |
| */ |
| public final Map<String, ISymbol> getNoneMap() |
| { |
| return getMapForScope(ISymbolConstants.SYMBOL_SCOPE_NONE); |
| } |
| } |