| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.netbeans.modules.web.el; |
| |
| import java.io.IOException; |
| import java.util.Collection; |
| import java.util.Collections; |
| import org.netbeans.api.project.FileOwnerQuery; |
| import org.netbeans.api.project.Project; |
| import org.netbeans.modules.parsing.spi.indexing.support.IndexResult; |
| import org.netbeans.modules.parsing.spi.indexing.support.QuerySupport; |
| import org.netbeans.modules.web.el.ELIndexer.Fields; |
| import org.openide.filesystems.FileObject; |
| import org.openide.util.Exceptions; |
| |
| /** |
| * Index for Expression Language |
| * |
| * @author Erno Mononen |
| */ |
| public final class ELIndex { |
| |
| private final QuerySupport querySupport; |
| |
| private ELIndex(QuerySupport querySupport) { |
| this.querySupport = querySupport; |
| } |
| |
| /** |
| * Gets the EL index for the given file. |
| * @param file the context. |
| * @return {@code ELIndex} or {@code null}. |
| */ |
| public static ELIndex get(FileObject file) { |
| Project project = FileOwnerQuery.getOwner(file); |
| Collection<FileObject> sourceRoots = QuerySupport.findRoots(project, |
| null, |
| Collections.<String>emptyList(), |
| Collections.<String>emptyList()); |
| try { |
| QuerySupport support = QuerySupport.forRoots(ELIndexer.Factory.NAME, |
| ELIndexer.Factory.VERSION, |
| sourceRoots.toArray(new FileObject[sourceRoots.size()])); |
| |
| return new ELIndex(support); |
| |
| } catch (IOException ex) { |
| Exceptions.printStackTrace(ex); |
| } |
| return null; |
| } |
| |
| /** |
| * Finds references to the given identifier (i.e. to nodes that the EL parser |
| * parses as {@code AstIdentifier}. |
| * @param identifierName the name of the identifier. |
| * @return |
| */ |
| public Collection<? extends IndexResult> findIdentifierReferences(String identifierName) { |
| Collection<? extends IndexResult> queryResults = query(Fields.IDENTIFIER, identifierName, QuerySupport.Kind.EXACT); |
| return queryResults; |
| } |
| |
| /** |
| * Finds references to the given property (i.e. to nodes that the EL parser |
| * parses as {@code AstPropertySuffix}. |
| * @param propertyName the name of the property. |
| * @return |
| */ |
| public Collection<? extends IndexResult> findPropertyReferences(String propertyName) { |
| return query(Fields.PROPERTY, propertyName, QuerySupport.Kind.EXACT); |
| } |
| |
| /** |
| * Finds references to the given method (i.e. to nodes that the EL parser |
| * parses as {@code AstMethodSuffix}. |
| * @param methodName the name of the method. |
| * @return |
| */ |
| public Collection<? extends IndexResult> findMethodReferences(String methodName) { |
| Collection<? extends IndexResult> queryResults = query(Fields.METHOD, methodName, QuerySupport.Kind.EXACT); |
| return queryResults; |
| } |
| |
| |
| private Collection<? extends IndexResult> query(String field, String value, QuerySupport.Kind kind) { |
| try { |
| return querySupport.query(field, value, kind); |
| } catch (IOException ex) { |
| Exceptions.printStackTrace(ex); |
| } |
| return Collections.emptySet(); |
| } |
| } |