mirror of
https://github.com/querydsl/querydsl.git
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123 lines
4.4 KiB
Java
123 lines
4.4 KiB
Java
/*
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* Copyright 2011, Mysema Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.mysema.query.sql;
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import java.math.BigDecimal;
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import com.mysema.query.types.Ops;
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/**
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* MySQLTemplates is an SQL dialect for MySQL
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*
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* <p>tested with MySQL CE 5.1 and 5.5</p>
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*
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* @author tiwe
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*
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*/
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public class MySQLTemplates extends SQLTemplates {
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public static Builder builder() {
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return new Builder() {
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@Override
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protected SQLTemplates build(char escape, boolean quote) {
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return new MySQLTemplates(escape, quote);
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}
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};
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}
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public MySQLTemplates() {
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this('\\', false);
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}
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public MySQLTemplates(boolean quote) {
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this('\\', quote);
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}
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public MySQLTemplates(char escape, boolean quote) {
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super("`", escape, quote);
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setParameterMetadataAvailable(false);
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setLimitRequired(true);
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setNullsFirst(null);
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setNullsLast(null);
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addClass2TypeMappings("bool", Boolean.class);
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addClass2TypeMappings("int", Integer.class);
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addClass2TypeMappings("decimal",
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Double.class,
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Float.class,
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BigDecimal.class);
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addClass2TypeMappings("char", String.class);
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add(Ops.CONCAT, "concat({0}, {1})",0);
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add(Ops.StringOps.LPAD, "lpad({0},{1},' ')");
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add(Ops.StringOps.RPAD, "rpad({0},{1},' ')");
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// like without escape
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if (escape == '\\') {
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add(Ops.LIKE, "{0} like {1}");
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add(Ops.ENDS_WITH, "{0} like {%1}");
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add(Ops.ENDS_WITH_IC, "{0l} like {%%1}");
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add(Ops.STARTS_WITH, "{0} like {1%}");
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add(Ops.STARTS_WITH_IC, "{0l} like {1%%}");
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add(Ops.STRING_CONTAINS, "{0} like {%1%}");
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add(Ops.STRING_CONTAINS_IC, "{0l} like {%%1%%}");
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}
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add(Ops.MathOps.LOG, "log({1},{0})");
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add(Ops.MathOps.COSH, "(exp({0}) + exp({0} * -1)) / 2");
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add(Ops.MathOps.COTH, "(exp({0} * 2) + 1) / (exp({0} * 2) - 1)");
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add(Ops.MathOps.SINH, "(exp({0}) - exp({0} * -1)) / 2");
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add(Ops.MathOps.TANH, "(exp({0} * 2) - 1) / (exp({0} * 2) + 1)");
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add(Ops.AggOps.BOOLEAN_ANY, "bit_or({0})", 0);
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add(Ops.AggOps.BOOLEAN_ALL, "bit_and({0})", 0);
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add(Ops.DateTimeOps.DAY_OF_WEEK, "dayofweek({0})");
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add(Ops.DateTimeOps.DAY_OF_YEAR, "dayofyear({0})");
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add(Ops.DateTimeOps.YEAR_MONTH, "extract(year_month from {0})");
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add(Ops.DateTimeOps.YEAR_WEEK, "yearweek({0})");
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add(Ops.DateTimeOps.ADD_YEARS, "date_add({0}, interval {1s} year)");
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add(Ops.DateTimeOps.ADD_MONTHS, "date_add({0}, interval {1s} month)");
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add(Ops.DateTimeOps.ADD_WEEKS, "date_add({0}, interval {1s} week)");
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add(Ops.DateTimeOps.ADD_DAYS, "date_add({0}, interval {1s} day)");
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add(Ops.DateTimeOps.ADD_HOURS, "date_add({0}, interval {1s} hour)");
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add(Ops.DateTimeOps.ADD_MINUTES, "date_add({0}, interval {1s} minute)");
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add(Ops.DateTimeOps.ADD_SECONDS, "date_add({0}, interval {1s} second)");
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add(Ops.DateTimeOps.DIFF_YEARS, "timestampdiff(year,{0},{1})");
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add(Ops.DateTimeOps.DIFF_MONTHS, "timestampdiff(month,{0},{1})");
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add(Ops.DateTimeOps.DIFF_WEEKS, "timestampdiff(week,{0},{1})");
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add(Ops.DateTimeOps.DIFF_DAYS, "timestampdiff(day,{0},{1})");
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add(Ops.DateTimeOps.DIFF_HOURS, "timestampdiff(hour,{0},{1})");
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add(Ops.DateTimeOps.DIFF_MINUTES, "timestampdiff(minute,{0},{1})");
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add(Ops.DateTimeOps.DIFF_SECONDS, "timestampdiff(second,{0},{1})");
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}
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@Override
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public String escapeLiteral(String str) {
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StringBuilder builder = new StringBuilder();
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for (char ch : super.escapeLiteral(str).toCharArray()) {
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if (ch == '\\') {
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builder.append("\\");
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}
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builder.append(ch);
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}
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return builder.toString();
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}
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}
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