| /** |
| * 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.jdbc.dialects; |
| |
| import org.apache.metamodel.jdbc.JdbcDataContext; |
| import org.apache.metamodel.query.FromItem; |
| import org.apache.metamodel.query.Query; |
| import org.apache.metamodel.schema.ColumnType; |
| import org.apache.metamodel.schema.Schema; |
| import org.apache.metamodel.schema.Table; |
| |
| /** |
| * Query rewriter for PostgreSQL |
| */ |
| public class PostgresqlQueryRewriter extends LimitOffsetQueryRewriter implements IQueryRewriter { |
| |
| public PostgresqlQueryRewriter(JdbcDataContext dataContext) { |
| super(dataContext); |
| } |
| |
| @Override |
| public ColumnType getColumnType(int jdbcType, String nativeType, Integer columnSize) { |
| if ("bool".equals(nativeType)) { |
| // override the normal behaviour of postgresql which maps "bool" to |
| // a BIT. |
| return ColumnType.BOOLEAN; |
| } |
| return super.getColumnType(jdbcType, nativeType, columnSize); |
| } |
| |
| @Override |
| public String rewriteColumnType(ColumnType columnType) { |
| if (columnType == ColumnType.BLOB) { |
| return "bytea"; |
| } |
| return super.rewriteColumnType(columnType); |
| } |
| |
| @Override |
| protected String rewriteFromItem(Query query, FromItem item) { |
| String result = super.rewriteFromItem(query, item); |
| Table table = item.getTable(); |
| if (table != null) { |
| Schema schema = table.getSchema(); |
| if (schema != null) { |
| String schemaName = schema.getName(); |
| if (schemaName != null) { |
| result = result.replaceFirst(schemaName, '\"' + schema.getName() + '\"'); |
| } |
| } |
| } |
| return result; |
| } |
| } |