mirror of
https://github.com/querydsl/querydsl.git
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121 lines
4.5 KiB
Java
121 lines
4.5 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 com.mysema.query.QueryFlag;
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import com.mysema.query.QueryFlag.Position;
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import com.mysema.query.QueryMetadata;
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import com.mysema.query.QueryModifiers;
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import com.mysema.query.support.Expressions;
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import com.mysema.query.types.Ops;
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/**
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* SQLServerTemplates is an SQL dialect for Microsoft SQL Server
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*
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* @author tiwe
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*
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*/
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public class SQLServerTemplates 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 SQLServerTemplates(escape, quote);
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}
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};
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}
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private String topTemplate = "top {0} ";
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public SQLServerTemplates() {
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this('\\',false);
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}
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public SQLServerTemplates(boolean quote) {
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this('\\',quote);
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}
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public SQLServerTemplates(char escape, boolean quote) {
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super("\"", escape, quote);
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addClass2TypeMappings("decimal", Double.class);
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setDummyTable("");
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// String
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add(Ops.CHAR_AT, "cast(substring({0},{1}+1,1) as char)");
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add(Ops.INDEX_OF, "charindex({1},{0})-1");
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add(Ops.INDEX_OF_2ARGS, "charindex({1},{0},{2})-1");
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// NOTE : needs to be replaced with real regular expression
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add(Ops.MATCHES, "{0} like {1}");
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add(Ops.STRING_IS_EMPTY, "len({0}) = 0");
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add(Ops.STRING_LENGTH, "len({0})");
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add(Ops.SUBSTR_1ARG, "substring({0},{1}+1,255)");
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add(Ops.SUBSTR_2ARGS, "substring({0},{1}+1,{2})");
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add(Ops.TRIM, "ltrim(rtrim({0}))");
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add(NEXTVAL, "{0s}.nextval");
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// Date / time
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add(Ops.DateTimeOps.YEAR, "datepart(year, {0})");
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add(Ops.DateTimeOps.MONTH, "datepart(month, {0})");
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add(Ops.DateTimeOps.WEEK, "datepart(week, {0})");
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add(Ops.DateTimeOps.DAY_OF_MONTH, "datepart(day, {0})");
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add(Ops.DateTimeOps.DAY_OF_WEEK, "datepart(weekday, {0})");
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add(Ops.DateTimeOps.DAY_OF_YEAR, "datepart(dayofyear, {0})");
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add(Ops.DateTimeOps.HOUR, "datepart(hour, {0})");
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add(Ops.DateTimeOps.MINUTE, "datepart(minute, {0})");
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add(Ops.DateTimeOps.SECOND, "datepart(second, {0})");
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add(Ops.DateTimeOps.MILLISECOND, "datepart(millisecond, {0})");
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add(Ops.DateTimeOps.ADD_YEARS, "dateadd('year', {1s}, {0})");
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add(Ops.DateTimeOps.ADD_MONTHS, "dateadd('month', {1s}, {0})");
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add(Ops.DateTimeOps.ADD_WEEKS, "dateadd('week', {1s}, {0})");
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add(Ops.DateTimeOps.ADD_DAYS, "dateadd('day', {1s}, {0})");
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add(Ops.DateTimeOps.ADD_HOURS, "dateadd('hour', {1s}, {0})");
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add(Ops.DateTimeOps.ADD_MINUTES, "dateadd('minute', {1s}, {0})");
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add(Ops.DateTimeOps.ADD_SECONDS, "dateadd('second', {1s}, {0})");
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}
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@Override
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public void serialize(QueryMetadata metadata, boolean forCountRow, SQLSerializer context) {
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if (!forCountRow && metadata.getModifiers().isRestricting() && !metadata.getJoins().isEmpty()) {
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QueryModifiers mod = metadata.getModifiers();
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if (mod.getOffset() == null) {
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// select top ...
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metadata = metadata.clone();
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metadata.addFlag(new QueryFlag(QueryFlag.Position.AFTER_SELECT,
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Expressions.template(Integer.class, topTemplate, mod.getLimit())));
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context.serializeForQuery(metadata, forCountRow);
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} else {
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throw new IllegalStateException("offset not supported");
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}
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} else {
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context.serializeForQuery(metadata, forCountRow);
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}
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if (!metadata.getFlags().isEmpty()) {
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context.serialize(Position.END, metadata.getFlags());
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}
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}
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@Override
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protected void serializeModifiers(QueryMetadata metadata, SQLSerializer context) {
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// do nothing
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}
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}
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