/*
* Copyright 2004-2011 H2 Group. Multiple-Licensed under the H2 License,
* Version 1.0, and under the Eclipse Public License, Version 1.0
* (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.jaqu;
//## Java 1.5 begin ##
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import org.h2.jaqu.util.JdbcUtils;
//## Java 1.5 end ##
/**
* This class represents a parameterized SQL statement.
*/
//## Java 1.5 begin ##
public class SQLStatement {
private Db db;
private StringBuilder buff = new StringBuilder();
private String sql;
private ArrayList<Object> params = new ArrayList<Object>();
SQLStatement(Db db) {
this.db = db;
}
void setSQL(String sql) {
this.sql = sql;
buff = new StringBuilder(sql);
}
public SQLStatement appendSQL(String s) {
buff.append(s);
sql = null;
return this;
}
public SQLStatement appendTable(String schema, String table) {
return appendSQL(db.getDialect().getTableName(schema, table));
}
String getSQL() {
if (sql == null) {
sql = buff.toString();
}
return sql;
}
SQLStatement addParameter(Object o) {
params.add(o);
return this;
}
ResultSet executeQuery() {
try {
return prepare(false).executeQuery();
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
int executeUpdate() {
PreparedStatement ps = null;
try {
ps = prepare(false);
return ps.executeUpdate();
} catch (SQLException e) {
throw new RuntimeException(e);
} finally {
JdbcUtils.closeSilently(ps);
}
}
long executeInsert() {
PreparedStatement ps = null;
try {
ps = prepare(true);
ps.executeUpdate();
long identity = -1;
ResultSet rs = ps.getGeneratedKeys();
if (rs != null && rs.next()) {
identity = rs.getLong(1);
}
JdbcUtils.closeSilently(rs);
return identity;
} catch (SQLException e) {
throw new RuntimeException(e);
} finally {
JdbcUtils.closeSilently(ps);
}
}
private static void setValue(PreparedStatement prep, int parameterIndex, Object x) {
try {
prep.setObject(parameterIndex, x);
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
private PreparedStatement prepare(boolean returnGeneratedKeys) {
PreparedStatement prep = db.prepare(getSQL(), returnGeneratedKeys);
for (int i = 0; i < params.size(); i++) {
Object o = params.get(i);
setValue(prep, i + 1, o);
}
return prep;
}
}
//## Java 1.5 end ##