Java tutorial
/* * Copyright 2014-15 Dilip Kumar * 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 com.dilipkumarg.qb; import java.util.List; import java.util.Set; import org.apache.commons.lang.StringUtils; import com.dilipkumarg.qb.core.InsertableQueryBuilder; import com.dilipkumarg.qb.models.SqlQuery; import com.dilipkumarg.qb.models.SqlTable; import com.dilipkumarg.qb.models.TableColumn; import com.google.common.collect.Lists; /** * @author Dilip Kumar. * @since 1/7/14 */ public class InsertQueryBuilder extends InsertableQueryBuilder<InsertQueryBuilder> { private static final String INSERT_TEMPLATE = "INSERT INTO %s (%s) VALUES (%s)"; public InsertQueryBuilder(SqlTable table) { super(table); } private String buildArgsKeyList(Set<TableColumn> columns) { List<String> keys = Lists.newArrayList(); for (TableColumn column : columns) { keys.add(column.getFieldName()); } return StringUtils.join(keys, SEPARATOR); } private String buildPlaceHolders(int size) { return StringUtils.repeat(PLACE_HOLDER, SEPARATOR, size); } @Override protected SqlQuery buildInsertableQuery() { String insertQuery = String.format(INSERT_TEMPLATE, getTable().getTableName(), buildArgsKeyList(getArguments().keySet()), buildPlaceHolders(getArguments().keySet().size())); return new SqlQuery(insertQuery, getArguments().values()); } }