| /******************************************************************************* |
| * Copyright (c) 2000, 2004 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.core.search.matching; |
| |
| import java.io.IOException; |
| |
| import org.eclipse.core.runtime.*; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.search.*; |
| import org.eclipse.jdt.internal.core.index.*; |
| import org.eclipse.jdt.internal.core.search.*; |
| |
| /** |
| * Internal search pattern implementation |
| */ |
| public abstract class InternalSearchPattern { |
| |
| /** |
| * The focus element (used for reference patterns) |
| */ |
| IJavaElement focus; |
| |
| final int kind; |
| boolean mustResolve = true; |
| |
| public InternalSearchPattern(int kind) { |
| this.kind = kind; |
| } |
| |
| void acceptMatch(String documentName, SearchPattern pattern, IndexQueryRequestor requestor, SearchParticipant participant, IJavaSearchScope scope) { |
| String documentPath = Index.convertPath(documentName); |
| if (scope.encloses(documentPath)) |
| if (!requestor.acceptIndexMatch(documentPath, pattern, participant)) |
| throw new OperationCanceledException(); |
| } |
| SearchPattern currentPattern() { |
| return (SearchPattern) this; |
| } |
| /** |
| * Query a given index for matching entries. Assumes the sender has opened the index and will close when finished. |
| */ |
| void findIndexMatches(Index index, IndexQueryRequestor requestor, SearchParticipant participant, IJavaSearchScope scope, IProgressMonitor monitor) throws IOException { |
| if (monitor != null && monitor.isCanceled()) throw new OperationCanceledException(); |
| try { |
| index.startQuery(); |
| SearchPattern pattern = currentPattern(); |
| EntryResult[] entries = ((InternalSearchPattern)pattern).queryIn(index); |
| if (entries == null) return; |
| |
| SearchPattern decodedResult = pattern.getBlankPattern(); |
| for (int i = 0, l = entries.length; i < l; i++) { |
| if (monitor != null && monitor.isCanceled()) throw new OperationCanceledException(); |
| |
| EntryResult entry = entries[i]; |
| decodedResult.decodeIndexKey(entry.getWord()); |
| if (pattern.matchesDecodedKey(decodedResult)) { |
| String[] names = entry.getDocumentNames(index); |
| for (int j = 0, n = names.length; j < n; j++) |
| acceptMatch(names[j], decodedResult, requestor, participant, scope); |
| } |
| } |
| } finally { |
| index.stopQuery(); |
| } |
| } |
| boolean isPolymorphicSearch() { |
| return false; |
| } |
| EntryResult[] queryIn(Index index) throws IOException { |
| SearchPattern pattern = (SearchPattern) this; |
| return index.query(pattern.getMatchCategories(), pattern.getIndexKey(), pattern.getMatchRule()); |
| } |
| |
| } |