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com.jfinal.plugin.activerecord.dialect.PostgreSqlDialect Maven / Gradle / Ivy
/**
* Copyright (c) 2011-2021, James Zhan 詹波 ([email protected] ).
*
* 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.jfinal.plugin.activerecord.dialect;
import java.math.BigInteger;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import com.jfinal.plugin.activerecord.Model;
import com.jfinal.plugin.activerecord.Record;
import com.jfinal.plugin.activerecord.Table;
import com.jfinal.plugin.activerecord.builder.TimestampProcessedModelBuilder;
import com.jfinal.plugin.activerecord.builder.TimestampProcessedRecordBuilder;
/**
* PostgreSqlDialect.
*/
public class PostgreSqlDialect extends Dialect {
public PostgreSqlDialect() {
this.modelBuilder = TimestampProcessedModelBuilder.me;
this.recordBuilder = TimestampProcessedRecordBuilder.me;
}
public String forTableBuilderDoBuild(String tableName) {
return "select * from \"" + tableName + "\" where 1 = 2";
}
public String forFindAll(String tableName) {
return "select * from \"" + tableName + "\"";
}
public void forModelSave(Table table, Map attrs, StringBuilder sql, List paras) {
sql.append("insert into \"").append(table.getName()).append("\"(");
StringBuilder temp = new StringBuilder(") values(");
for (Entry e: attrs.entrySet()) {
String colName = e.getKey();
if (table.hasColumnLabel(colName)) {
if (paras.size() > 0) {
sql.append(", ");
temp.append(", ");
}
sql.append('\"').append(colName).append('\"');
temp.append('?');
paras.add(e.getValue());
}
}
sql.append(temp.toString()).append(')');
}
public String forModelDeleteById(Table table) {
String[] pKeys = table.getPrimaryKey();
StringBuilder sql = new StringBuilder(45);
sql.append("delete from \"");
sql.append(table.getName());
sql.append("\" where ");
for (int i=0; i 0) {
sql.append(" and ");
}
sql.append('\"').append(pKeys[i]).append("\" = ?");
}
return sql.toString();
}
public void forModelUpdate(Table table, Map attrs, Set modifyFlag, StringBuilder sql, List paras) {
sql.append("update \"").append(table.getName()).append("\" set ");
String[] pKeys = table.getPrimaryKey();
for (Entry e : attrs.entrySet()) {
String colName = e.getKey();
if (modifyFlag.contains(colName) && !isPrimaryKey(colName, pKeys) && table.hasColumnLabel(colName)) {
if (paras.size() > 0) {
sql.append(", ");
}
sql.append('\"').append(colName).append("\" = ? ");
paras.add(e.getValue());
}
}
sql.append(" where ");
for (int i=0; i 0) {
sql.append(" and ");
}
sql.append('\"').append(pKeys[i]).append("\" = ?");
paras.add(attrs.get(pKeys[i]));
}
}
public String forModelFindById(Table table, String columns) {
StringBuilder sql = new StringBuilder("select ");
columns = columns.trim();
if ("*".equals(columns)) {
sql.append('*');
}
else {
String[] arr = columns.split(",");
for (int i=0; i 0) {
sql.append(',');
}
sql.append('\"').append(arr[i].trim()).append('\"');
}
}
sql.append(" from \"");
sql.append(table.getName());
sql.append("\" where ");
String[] pKeys = table.getPrimaryKey();
for (int i=0; i 0) {
sql.append(" and ");
}
sql.append('\"').append(pKeys[i]).append("\" = ?");
}
return sql.toString();
}
public String forDbFindById(String tableName, String[] pKeys) {
tableName = tableName.trim();
trimPrimaryKeys(pKeys);
StringBuilder sql = new StringBuilder("select * from \"").append(tableName).append("\" where ");
for (int i=0; i 0) {
sql.append(" and ");
}
sql.append('\"').append(pKeys[i]).append("\" = ?");
}
return sql.toString();
}
public String forDbDeleteById(String tableName, String[] pKeys) {
tableName = tableName.trim();
trimPrimaryKeys(pKeys);
StringBuilder sql = new StringBuilder("delete from \"").append(tableName).append("\" where ");
for (int i=0; i 0) {
sql.append(" and ");
}
sql.append('\"').append(pKeys[i]).append("\" = ?");
}
return sql.toString();
}
public void forDbSave(String tableName, String[] pKeys, Record record, StringBuilder sql, List paras) {
tableName = tableName.trim();
trimPrimaryKeys(pKeys);
sql.append("insert into \"");
sql.append(tableName).append("\"(");
StringBuilder temp = new StringBuilder();
temp.append(") values(");
for (Entry e: record.getColumns().entrySet()) {
if (paras.size() > 0) {
sql.append(", ");
temp.append(", ");
}
sql.append('\"').append(e.getKey()).append('\"');
temp.append('?');
paras.add(e.getValue());
}
sql.append(temp.toString()).append(')');
}
public void forDbUpdate(String tableName, String[] pKeys, Object[] ids, Record record, StringBuilder sql, List paras) {
tableName = tableName.trim();
trimPrimaryKeys(pKeys);
sql.append("update \"").append(tableName).append("\" set ");
for (Entry e: record.getColumns().entrySet()) {
String colName = e.getKey();
if (!isPrimaryKey(colName, pKeys)) {
if (paras.size() > 0) {
sql.append(", ");
}
sql.append('\"').append(colName).append("\" = ? ");
paras.add(e.getValue());
}
}
sql.append(" where ");
for (int i=0; i 0) {
sql.append(" and ");
}
sql.append('\"').append(pKeys[i]).append("\" = ?");
paras.add(ids[i]);
}
}
public String forPaginate(int pageNumber, int pageSize, StringBuilder findSql) {
int offset = pageSize * (pageNumber - 1);
findSql.append(" limit ").append(pageSize).append(" offset ").append(offset);
return findSql.toString();
}
public void fillStatement(PreparedStatement pst, List paras) throws SQLException {
fillStatementHandleDateType(pst, paras);
}
public void fillStatement(PreparedStatement pst, Object... paras) throws SQLException {
fillStatementHandleDateType(pst, paras);
}
/**
* 解决 PostgreSql 获取自增主键时 rs.getObject(1) 总是返回第一个字段的值，而非返回了 id 值
* issue: https://www.oschina.net/question/2312705_2243354
*
* 相对于 Dialect 中的默认实现，仅将 rs.getXxx(1) 改成了 rs.getXxx(pKey)
*/
public void getModelGeneratedKey(Model model, PreparedStatement pst, Table table) throws SQLException {
String[] pKeys = table.getPrimaryKey();
ResultSet rs = pst.getGeneratedKeys();
for (String pKey : pKeys) {
if (model.get(pKey) == null || isOracle()) {
if (rs.next()) {
Class colType = table.getColumnType(pKey);
if (colType != null) {
if (colType == Integer.class || colType == int.class) {
model.set(pKey, rs.getInt(pKey));
} else if (colType == Long.class || colType == long.class) {
model.set(pKey, rs.getLong(pKey));
} else if (colType == BigInteger.class) {
processGeneratedBigIntegerKey(model, pKey, rs.getObject(pKey));
} else {
model.set(pKey, rs.getObject(pKey));
}
}
}
}
}
rs.close();
}
/**
* 解决 PostgreSql 获取自增主键时 rs.getObject(1) 总是返回第一个字段的值，而非返回了 id 值
* issue: https://www.oschina.net/question/2312705_2243354
*
* 相对于 Dialect 中的默认实现，仅将 rs.getXxx(1) 改成了 rs.getXxx(pKey)
*/
public void getRecordGeneratedKey(PreparedStatement pst, Record record, String[] pKeys) throws SQLException {
ResultSet rs = pst.getGeneratedKeys();
for (String pKey : pKeys) {
if (record.get(pKey) == null || isOracle()) {
if (rs.next()) {
record.set(pKey, rs.getObject(pKey));
}
}
}
rs.close();
}
}
