| /** |
| * |
| * Copyright 2009-2011 Rickard Öberg AB |
| * |
| * Licensed 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.zest.library.rest.common.table; |
| |
| import org.apache.zest.api.value.ValueBuilder; |
| import org.apache.zest.api.value.ValueBuilderFactory; |
| |
| /** |
| * JAVADOC |
| */ |
| public class QueryBuilder<T extends QueryBuilder> |
| { |
| protected ValueBuilder<TableQuery> queryBuilder; |
| |
| private StringBuilder select; |
| |
| public QueryBuilder( ValueBuilderFactory vbf ) |
| { |
| queryBuilder = vbf.newValueBuilder( TableQuery.class ); |
| } |
| |
| public T select(String... columns) |
| { |
| if (select == null) |
| select = new StringBuilder( ); |
| |
| for (String column : columns) |
| { |
| if (select.length() > 0) |
| select.append( ',' ); |
| select.append( column ); |
| } |
| |
| return (T) this; |
| } |
| |
| public TableQuery newQuery() |
| { |
| String query = ""; |
| |
| if (select != null) |
| query+= "select "+select.toString(); |
| |
| queryBuilder.prototype().tq().set( query ); |
| |
| return queryBuilder.newInstance(); |
| } |
| } |