| /* |
| * 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.apache.jackrabbit.oak.query.ast; |
| |
| import org.apache.jackrabbit.oak.api.PropertyValue; |
| import org.apache.jackrabbit.oak.commons.PathUtils; |
| import org.apache.jackrabbit.oak.query.QueryImpl; |
| import org.apache.jackrabbit.oak.query.ValueConverter; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * The base class for all abstract syntax tree nodes. |
| */ |
| abstract class AstElement { |
| protected QueryImpl query; |
| |
| abstract boolean accept(AstVisitor v); |
| |
| protected String protect(Object expression) { |
| String str = expression.toString(); |
| if (str.indexOf(' ') >= 0) { |
| return '(' + str + ')'; |
| } else { |
| return str; |
| } |
| } |
| |
| protected String quote(String pathOrName) { |
| pathOrName = pathOrName.replaceAll("]", "]]"); |
| return '[' + pathOrName + ']'; |
| } |
| |
| protected String quoteJson(String string) { |
| return '"' + string.replaceAll("\"", "\"\"") + '"'; |
| } |
| |
| public void setQuery(QueryImpl query) { |
| this.query = query; |
| } |
| |
| /** |
| * Normalize the property name (including namespace remapping). |
| * Asterisks are kept. |
| * |
| * @param propertyName the property name to normalize |
| * @return the normalized (oak-) property name |
| */ |
| protected String normalizePropertyName(String propertyName) { |
| // TODO normalize the path (remove superfluous ".." and "." |
| // where possible) |
| if (query == null) { |
| return propertyName; |
| } |
| if (propertyName == null) { |
| return null; |
| } |
| int slash = propertyName.indexOf('/'); |
| if (slash < 0) { |
| return normalizeNonRelativePropertyName(propertyName); |
| } |
| // relative properties |
| String relativePath = PathUtils.getParentPath(propertyName); |
| if (relativePath.indexOf('*') >= 0) { |
| StringBuilder buff = new StringBuilder(); |
| for (String p : PathUtils.elements(relativePath)) { |
| if (!p.equals("*")) { |
| p = query.getOakPath(p); |
| } |
| if (p.length() > 0) { |
| if (buff.length() > 0) { |
| buff.append('/'); |
| } |
| buff.append(p); |
| } |
| } |
| relativePath = buff.toString(); |
| } else { |
| relativePath = query.getOakPath(relativePath); |
| } |
| propertyName = PathUtils.getName(propertyName); |
| propertyName = normalizeNonRelativePropertyName(propertyName); |
| return PathUtils.concat(relativePath, propertyName); |
| } |
| |
| private String normalizeNonRelativePropertyName(String propertyName) { |
| if (propertyName.equals("*")) { |
| return propertyName; |
| } |
| return query.getOakPath(propertyName); |
| } |
| |
| /** |
| * Validate and normalize the path. |
| * |
| * @param path the path to validate |
| * @return the validated and normalized path |
| */ |
| protected String normalizePath(String path) { |
| // TODO normalize the path (remove superfluous ".." and "." |
| // where possible) |
| if (query == null) { |
| return path; |
| } |
| return query.getOakPath(path); |
| } |
| |
| protected PropertyValue convertValueToType(PropertyValue v, PropertyValue targetType) { |
| if (targetType.count() == 0) { |
| return v; |
| } |
| int type = targetType.getType().tag(); |
| if (v.getType().tag() == type) { |
| return v; |
| } |
| try { |
| return ValueConverter.convert(v, type, query.getNamePathMapper()); |
| } catch (IllegalArgumentException e) { |
| // not possible to convert |
| return v; |
| } |
| } |
| |
| /** |
| * Calculate the session local path (the path excluding the workspace name) |
| * if possible. |
| * |
| * @param path the absolute path |
| * @return the session local path, or null if not within this workspace |
| */ |
| protected String getLocalPath(String path) { |
| return path; |
| } |
| |
| /** |
| * @return a clone of self. Default implementation in {@link AstElement} returns same reference |
| * to {@code this}. |
| */ |
| @NotNull |
| public AstElement copyOf() { |
| return this; |
| } |
| } |
| |