mirror of
https://github.com/querydsl/querydsl.git
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102 lines
4.1 KiB
Java
102 lines
4.1 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 org.joda.time.ReadableInstant;
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import com.mysema.query.types.Ops;
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/**
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* SQLiteTemplates is a SQL dialect for SQLite
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*
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* @author tiwe
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*
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*/
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public class SQLiteTemplates 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 SQLiteTemplates(escape, quote);
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}
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};
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}
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public SQLiteTemplates() {
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this('\\', false);
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}
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public SQLiteTemplates(boolean quote) {
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this('\\', quote);
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}
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public SQLiteTemplates(char escape, boolean quote) {
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super("\"", escape, quote);
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setDummyTable(null);
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setBigDecimalSupported(false);
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setUnionsWrapped(false);
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setLimitRequired(true);
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setNullsFirst(null);
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setNullsLast(null);
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add(Ops.MOD, "{0} % {1}");
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add(Ops.INDEX_OF, "charindex({1},{0},1)-1");
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add(Ops.INDEX_OF_2ARGS, "charindex({1},{0},{2s}+1)-1");
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add(Ops.StringOps.LOCATE, "charindex({0},{1})");
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add(Ops.StringOps.LOCATE2, "charindex({0},{1},{2s})");
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// TODO : optimize
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add(Ops.DateTimeOps.YEAR, "cast(strftime('%Y',{0} / 1000, 'unixepoch', 'localtime') as integer)");
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add(Ops.DateTimeOps.MONTH, "cast(strftime('%m',{0} / 1000, 'unixepoch', 'localtime') as integer)");
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add(Ops.DateTimeOps.WEEK, "cast(strftime('%W',{0} / 1000, 'unixepoch', 'localtime') as integer) + 1");
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add(Ops.DateTimeOps.DAY_OF_MONTH, "cast(strftime('%d',{0} / 1000, 'unixepoch', 'localtime') as integer)");
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add(Ops.DateTimeOps.DAY_OF_WEEK, "cast(strftime('%w',{0} / 1000, 'unixepoch', 'localtime') as integer) + 1");
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add(Ops.DateTimeOps.DAY_OF_YEAR, "cast(strftime('%j',{0} / 1000, 'unixepoch', 'localtime') as integer)");
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add(Ops.DateTimeOps.HOUR, "cast(strftime('%H',{0} / 1000, 'unixepoch', 'localtime') as integer)");
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add(Ops.DateTimeOps.MINUTE, "cast(strftime('%M',{0} / 1000, 'unixepoch', 'localtime') as integer)");
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add(Ops.DateTimeOps.SECOND, "cast(strftime('%S',{0} / 1000, 'unixepoch', 'localtime') as integer)");
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add(Ops.DateTimeOps.YEAR_MONTH, "cast(strftime('%Y',{0} / 1000, 'unixepoch', 'localtime') * 100 + strftime('%m',{0} / 1000, 'unixepoch', 'localtime') as integer)");
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add(Ops.DateTimeOps.YEAR_WEEK, "cast(strftime('%Y%W',{0} / 1000, 'unixepoch', 'localtime') as integer)");
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add(Ops.DateTimeOps.ADD_YEARS, "date({0}, '+{1s} year')");
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add(Ops.DateTimeOps.ADD_MONTHS, "date({0}, '+{1s} month')");
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add(Ops.DateTimeOps.ADD_WEEKS, "date({0}, '+{1s} week')");
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add(Ops.DateTimeOps.ADD_DAYS, "date({0}, '+{1s} day')");
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add(Ops.DateTimeOps.ADD_HOURS, "date({0}, '+{1s} hour')");
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add(Ops.DateTimeOps.ADD_MINUTES, "date({0}, '+{1s} minute')");
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add(Ops.DateTimeOps.ADD_SECONDS, "date({0}, '+{1s} second')");
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add(Ops.MathOps.RANDOM, "random()");
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add(Ops.MathOps.RANDOM2, "random({0})");
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add(Ops.MathOps.LN, "log({0})");
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add(Ops.MathOps.LOG, "(log({0}) / log({1}))");
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}
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@Override
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public String asLiteral(Object o) {
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if (o instanceof java.util.Date) {
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return String.valueOf(((java.util.Date)o).getTime());
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} else if (o instanceof ReadableInstant) {
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return String.valueOf(((ReadableInstant)o).getMillis());
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// TODO ReadablePartial
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} else {
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return super.asLiteral(o);
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}
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}
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}
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