/*
* Copyright 2015, The Querydsl Team (http://www.querydsl.com/team)
*
* 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.querydsl.sql;
import java.sql.Types;
import com.google.common.collect.ImmutableList;
import com.querydsl.core.QueryFlag;
import com.querydsl.core.QueryFlag.Position;
import com.querydsl.core.types.Expression;
import com.querydsl.core.types.ExpressionUtils;
import com.querydsl.core.types.Ops;
/**
* {@code MySQLTemplates} is an SQL dialect for MySQL
*
* <p>tested with MySQL CE 5.1 and 5.5</p>
*
* @author tiwe
*
*/
public class MySQLTemplates extends SQLTemplates {
protected static final Expression<?> LOCK_IN_SHARE_MODE = ExpressionUtils.operation(
Object.class, SQLOps.LOCK_IN_SHARE_MODE, ImmutableList.<Expression<?>>of());
@SuppressWarnings("FieldNameHidesFieldInSuperclass") //Intentional
public static final MySQLTemplates DEFAULT = new MySQLTemplates();
public static Builder builder() {
return new Builder() {
@Override
protected SQLTemplates build(char escape, boolean quote) {
return new MySQLTemplates(escape, quote);
}
};
}
public MySQLTemplates() {
this('\\', false);
}
public MySQLTemplates(boolean quote) {
this('\\', quote);
}
public MySQLTemplates(char escape, boolean quote) {
super(Keywords.MYSQL, "`", escape, quote, false);
setArraysSupported(false);
setParameterMetadataAvailable(false);
setLimitRequired(true);
setSupportsUnquotedReservedWordsAsIdentifier(true);
setNullsFirst(null);
setNullsLast(null);
setForShareSupported(true);
setForShareFlag(new QueryFlag(Position.END, LOCK_IN_SHARE_MODE));
setPrecedence(Precedence.COMPARISON, Ops.EQ, Ops.EQ_IGNORE_CASE, Ops.NE);
setPrecedence(Precedence.CASE, Ops.BETWEEN);
add(SQLOps.LOCK_IN_SHARE_MODE, "\nlock in share mode");
add(Ops.MOD, "{0} % {1}", Precedence.ARITH_HIGH);
add(Ops.CONCAT, "concat({0}, {1})", -1);
add(Ops.StringOps.LPAD, "lpad({0},{1},' ')");
add(Ops.StringOps.RPAD, "rpad({0},{1},' ')");
// like without escape
if (escape == '\\') {
add(Ops.LIKE, "{0} like {1}");
add(Ops.ENDS_WITH, "{0} like {%1}");
add(Ops.ENDS_WITH_IC, "{0l} like {%%1}");
add(Ops.STARTS_WITH, "{0} like {1%}");
add(Ops.STARTS_WITH_IC, "{0l} like {1%%}");
add(Ops.STRING_CONTAINS, "{0} like {%1%}");
add(Ops.STRING_CONTAINS_IC, "{0l} like {%%1%%}");
}
add(Ops.MathOps.LOG, "log({1},{0})");
add(Ops.MathOps.COSH, "(exp({0}) + exp({0*'-1'})) / 2");
add(Ops.MathOps.COTH, "(exp({0*'2'}) + 1) / (exp({0*'2'}) - 1)");
add(Ops.MathOps.SINH, "(exp({0}) - exp({0*'-1'})) / 2");
add(Ops.MathOps.TANH, "(exp({0*'2'}) - 1) / (exp({0*'2'}) + 1)");
add(Ops.AggOps.BOOLEAN_ANY, "bit_or({0})", 0);
add(Ops.AggOps.BOOLEAN_ALL, "bit_and({0})", 0);
add(Ops.DateTimeOps.DAY_OF_WEEK, "dayofweek({0})");
add(Ops.DateTimeOps.DAY_OF_YEAR, "dayofyear({0})");
add(Ops.DateTimeOps.YEAR_MONTH, "extract(year_month from {0})");
add(Ops.DateTimeOps.YEAR_WEEK, "yearweek({0})");
add(Ops.DateTimeOps.ADD_YEARS, "date_add({0}, interval {1s} year)");
add(Ops.DateTimeOps.ADD_MONTHS, "date_add({0}, interval {1s} month)");
add(Ops.DateTimeOps.ADD_WEEKS, "date_add({0}, interval {1s} week)");
add(Ops.DateTimeOps.ADD_DAYS, "date_add({0}, interval {1s} day)");
add(Ops.DateTimeOps.ADD_HOURS, "date_add({0}, interval {1s} hour)");
add(Ops.DateTimeOps.ADD_MINUTES, "date_add({0}, interval {1s} minute)");
add(Ops.DateTimeOps.ADD_SECONDS, "date_add({0}, interval {1s} second)");
add(Ops.DateTimeOps.DIFF_YEARS, "timestampdiff(year,{0},{1})");
add(Ops.DateTimeOps.DIFF_MONTHS, "timestampdiff(month,{0},{1})");
add(Ops.DateTimeOps.DIFF_WEEKS, "timestampdiff(week,{0},{1})");
add(Ops.DateTimeOps.DIFF_DAYS, "timestampdiff(day,{0},{1})");
add(Ops.DateTimeOps.DIFF_HOURS, "timestampdiff(hour,{0},{1})");
add(Ops.DateTimeOps.DIFF_MINUTES, "timestampdiff(minute,{0},{1})");
add(Ops.DateTimeOps.DIFF_SECONDS, "timestampdiff(second,{0},{1})");
add(Ops.DateTimeOps.TRUNC_YEAR, "str_to_date(concat(date_format({0},'%Y'),'-1-1'),'%Y-%m-%d')");
add(Ops.DateTimeOps.TRUNC_MONTH, "str_to_date(concat(date_format({0},'%Y-%m'),'-1'),'%Y-%m-%d')");
add(Ops.DateTimeOps.TRUNC_WEEK, "str_to_date(concat(date_format({0},'%Y-%u'),'-2'),'%Y-%u-%w')");
add(Ops.DateTimeOps.TRUNC_DAY, "str_to_date(date_format({0},'%Y-%m-%d'),'%Y-%m-%d')");
add(Ops.DateTimeOps.TRUNC_HOUR, "str_to_date(date_format({0},'%Y-%m-%d %k'),'%Y-%m-%d %k')");
add(Ops.DateTimeOps.TRUNC_MINUTE, "str_to_date(date_format({0},'%Y-%m-%d %k:%i'),'%Y-%m-%d %k:%i')");
add(Ops.DateTimeOps.TRUNC_SECOND, "str_to_date(date_format({0},'%Y-%m-%d %k:%i:%s'),'%Y-%m-%d %k:%i:%s')");
addTypeNameToCode("bool", Types.BIT, true);
addTypeNameToCode("tinyint unsigned", Types.TINYINT);
addTypeNameToCode("bigint unsigned", Types.BIGINT);
addTypeNameToCode("long varbinary", Types.LONGVARBINARY, true);
addTypeNameToCode("mediumblob", Types.LONGVARBINARY);
addTypeNameToCode("longblob", Types.LONGVARBINARY);
addTypeNameToCode("blob", Types.LONGVARBINARY);
addTypeNameToCode("tinyblob", Types.LONGVARBINARY);
addTypeNameToCode("long varchar", Types.LONGVARCHAR, true);
addTypeNameToCode("mediumtext", Types.LONGVARCHAR);
addTypeNameToCode("longtext", Types.LONGVARCHAR);
addTypeNameToCode("text", Types.LONGVARCHAR);
addTypeNameToCode("tinytext", Types.LONGVARCHAR);
addTypeNameToCode("integer unsigned", Types.INTEGER);
addTypeNameToCode("int", Types.INTEGER);
addTypeNameToCode("int unsigned", Types.INTEGER);
addTypeNameToCode("mediumint", Types.INTEGER);
addTypeNameToCode("mediumint unsigned", Types.INTEGER);
addTypeNameToCode("smallint unsigned", Types.SMALLINT);
addTypeNameToCode("float", Types.REAL, true);
addTypeNameToCode("double precision", Types.DOUBLE, true);
addTypeNameToCode("real", Types.DOUBLE);
addTypeNameToCode("enum", Types.VARCHAR);
addTypeNameToCode("set", Types.VARCHAR);
addTypeNameToCode("datetime", Types.TIMESTAMP, true);
}
@Override
public String escapeLiteral(String str) {
StringBuilder builder = new StringBuilder();
for (char ch : super.escapeLiteral(str).toCharArray()) {
if (ch == '\\') {
builder.append("\\");
}
builder.append(ch);
}
return builder.toString();
}
@Override
public String getCastTypeNameForCode(int code) {
switch (code) {
case Types.TINYINT:
case Types.SMALLINT:
case Types.INTEGER:
case Types.BIGINT: return "signed";
case Types.FLOAT:
case Types.DOUBLE:
case Types.REAL:
case Types.DECIMAL: return "decimal";
case Types.VARCHAR: return "char";
default: return super.getCastTypeNameForCode(code);
}
}
}