| /** |
| * 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.metamodel.update; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.metamodel.data.AbstractRowBuilder; |
| import org.apache.metamodel.query.FilterClause; |
| import org.apache.metamodel.query.FilterItem; |
| import org.apache.metamodel.query.SelectItem; |
| import org.apache.metamodel.query.builder.AbstractFilterBuilder; |
| import org.apache.metamodel.query.builder.FilterBuilder; |
| import org.apache.metamodel.schema.Column; |
| import org.apache.metamodel.schema.Table; |
| |
| /** |
| * Abstract {@link RowUpdationBuilder} implementation. |
| */ |
| public abstract class AbstractRowUpdationBuilder extends AbstractRowBuilder<RowUpdationBuilder> implements |
| RowUpdationBuilder { |
| |
| private final Table _table; |
| private final List<FilterItem> _whereItems; |
| |
| public AbstractRowUpdationBuilder(Table table) { |
| super(table); |
| _table = table; |
| _whereItems = new ArrayList<FilterItem>(); |
| } |
| |
| protected List<FilterItem> getWhereItems() { |
| return _whereItems; |
| } |
| |
| @Override |
| public FilterBuilder<RowUpdationBuilder> where(Column column) { |
| SelectItem selectItem = new SelectItem(column); |
| return new AbstractFilterBuilder<RowUpdationBuilder>(selectItem) { |
| @Override |
| protected RowUpdationBuilder applyFilter(FilterItem filter) { |
| return where(filter); |
| } |
| }; |
| } |
| |
| @Override |
| public FilterBuilder<RowUpdationBuilder> where(String columnName) { |
| Column column = _table.getColumnByName(columnName); |
| if (column == null) { |
| throw new IllegalArgumentException("No such column: " + columnName); |
| } |
| return where(column); |
| } |
| |
| @Override |
| public RowUpdationBuilder where(FilterItem... filterItems) { |
| for (FilterItem filterItem : filterItems) { |
| _whereItems.add(filterItem); |
| } |
| return this; |
| } |
| |
| @Override |
| public RowUpdationBuilder where(Iterable<FilterItem> filterItems) { |
| for (FilterItem filterItem : filterItems) { |
| _whereItems.add(filterItem); |
| } |
| return this; |
| } |
| |
| @Override |
| public Table getTable() { |
| return _table; |
| } |
| |
| @Override |
| public String toSql() { |
| StringBuilder sb = new StringBuilder(); |
| sb.append("UPDATE "); |
| sb.append(_table.getQualifiedLabel()); |
| sb.append(" SET "); |
| Column[] columns = getColumns(); |
| Object[] values = getValues(); |
| |
| for (int i = 0; i < columns.length; i++) { |
| if (i != 0) { |
| sb.append(','); |
| } |
| sb.append(columns[i].getName()); |
| sb.append('='); |
| sb.append(values[i] == null ? "NULL" : values[i].toString()); |
| } |
| |
| List<FilterItem> whereItems = getWhereItems(); |
| String whereClause = new FilterClause(null, " WHERE ").addItems(whereItems).toSql(); |
| sb.append(whereClause); |
| return sb.toString(); |
| } |
| |
| @Override |
| public String toString() { |
| return toSql(); |
| } |
| |
| } |