| /** |
| * 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.gora.sql.statement; |
| |
| /** |
| * A WHERE clause in an SQL statement |
| */ |
| public class Where { |
| |
| private StringBuilder builder; |
| |
| public Where() { |
| builder = new StringBuilder(); |
| } |
| |
| public Where(String where) { |
| builder = new StringBuilder(where == null ? "" : where); |
| } |
| |
| /** Adds a part to the Where clause connected with AND */ |
| public void addPart(String part) { |
| if (builder.length() > 0) { |
| builder.append(" AND "); |
| } |
| builder.append(part); |
| } |
| |
| public void equals(String name, String value) { |
| addPart(name + " = " + value); |
| } |
| |
| public void lessThan(String name, String value) { |
| addPart(name + " < " + value); |
| } |
| |
| public void lessThanEq(String name, String value) { |
| addPart(name + " <= " + value); |
| } |
| |
| public void greaterThan(String name, String value) { |
| addPart(name + " > " + value); |
| } |
| |
| public void greaterThanEq(String name, String value) { |
| addPart(name + " >= " + value); |
| } |
| |
| public boolean isEmpty() { |
| return builder.length() == 0; |
| } |
| |
| @Override |
| public String toString() { |
| return builder.toString(); |
| } |
| } |