/*
* Copyright 2011, Mysema Ltd
*
* 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.mysema.query.sql;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.TimeZone;
import com.mysema.query.BooleanBuilder;
import com.mysema.query.QueryMetadata;
import com.mysema.query.Survey;
import com.mysema.query.Tuple;
import com.mysema.query.sql.domain.QEmployee;
import com.mysema.query.sql.domain.QEmployeeNoPK;
import com.mysema.query.sql.domain.QSurvey;
import com.mysema.query.support.Expressions;
import com.mysema.query.types.Expression;
import com.mysema.query.types.Path;
import com.mysema.query.types.SubQueryExpression;
import com.mysema.query.types.expr.Wildcard;
import com.mysema.query.types.path.NumberPath;
import com.mysema.query.types.path.PathBuilder;
import com.mysema.query.types.path.StringPath;
import org.junit.Test;
public class SQLSerializerTest {
private static final QEmployee employee = QEmployee.employee;
private static final QSurvey survey = QSurvey.survey;
@Test
public void Count() {
SQLSerializer serializer = new SQLSerializer(Configuration.DEFAULT);
serializer.handle(employee.id.count().add(employee.id.countDistinct()));
assertEquals("count(EMPLOYEE.ID) + count(distinct EMPLOYEE.ID)", serializer.toString());
}
@Test
public void CountDistinct() {
SQLSerializer serializer = new SQLSerializer(Configuration.DEFAULT);
SQLSubQuery query = new SQLSubQuery();
query.from(QEmployeeNoPK.employee);
query.distinct();
serializer.serializeForQuery(query.getMetadata(), true);
assertEquals("select count(*)\n" +
"from (select distinct EMPLOYEE.ID, EMPLOYEE.FIRSTNAME, EMPLOYEE.LASTNAME, EMPLOYEE.SALARY, " +
"EMPLOYEE.DATEFIELD, EMPLOYEE.TIMEFIELD, EMPLOYEE.SUPERIOR_ID\n" +
"from EMPLOYEE EMPLOYEE) internal", serializer.toString());
}
@Test
public void CountDistinct_PostgreSQL() {
Configuration postgres = new Configuration(new PostgresTemplates());
SQLSerializer serializer = new SQLSerializer(postgres);
SQLSubQuery query = new SQLSubQuery();
query.from(QEmployeeNoPK.employee);
query.distinct();
serializer.serializeForQuery(query.getMetadata(), true);
assertEquals("select count(" +
"distinct (EMPLOYEE.ID, EMPLOYEE.FIRSTNAME, EMPLOYEE.LASTNAME, EMPLOYEE.SALARY, " +
"EMPLOYEE.DATEFIELD, EMPLOYEE.TIMEFIELD, EMPLOYEE.SUPERIOR_ID))\n" +
"from EMPLOYEE EMPLOYEE", serializer.toString());
}
@Test
public void DynamicQuery() {
Path<Object> userPath = Expressions.path(Object.class, "user");
NumberPath<Long> idPath = Expressions.numberPath(Long.class, userPath, "id");
StringPath usernamePath = Expressions.stringPath(userPath, "username");
Expression<?> sq = new SQLSubQuery()
.from(userPath).where(idPath.eq(1l))
.list(idPath, usernamePath);
SQLSerializer serializer = new SQLSerializer(Configuration.DEFAULT);
serializer.handle(sq);
//USER is a reserved word in ANSI SQL 2008
assertEquals("(select \"user\".id, \"user\".username\n" +
"from \"user\"\n" +
"where \"user\".id = ?)", serializer.toString());
}
@Test
public void DynamicQuery2() {
PathBuilder<Object> userPath = new PathBuilder<Object>(Object.class, "user");
NumberPath<Long> idPath = userPath.getNumber("id", Long.class);
StringPath usernamePath = userPath.getString("username");
Expression<?> sq = new SQLSubQuery()
.from(userPath).where(idPath.eq(1l))
.list(idPath, usernamePath);
SQLSerializer serializer = new SQLSerializer(Configuration.DEFAULT);
serializer.handle(sq);
//USER is a reserved word in ANSI SQL 2008
assertEquals("(select \"user\".id, \"user\".username\n" +
"from \"user\"\n" +
"where \"user\".id = ?)", serializer.toString());
}
@Test
public void Some() {
//select some((e.FIRSTNAME is not null)) from EMPLOYEE
SQLSerializer serializer = new SQLSerializer(Configuration.DEFAULT);
serializer.handle(SQLExpressions.any(employee.firstname.isNotNull()));
assertEquals("some(EMPLOYEE.FIRSTNAME is not null)", serializer.toString());
}
@Test
public void StartsWith() {
SQLSerializer serializer = new SQLSerializer(Configuration.DEFAULT);
QSurvey s1 = new QSurvey("s1");
serializer.handle(s1.name.startsWith("X"));
assertEquals("s1.NAME like ? escape '\\'", serializer.toString());
assertEquals(Arrays.asList("X%"), serializer.getConstants());
}
@Test
public void From_Function() {
SQLQuery query = query();
query.from(Expressions.template(Survey.class, "functionCall()")).join(survey);
query.where(survey.name.isNotNull());
assertEquals("from functionCall()\njoin SURVEY SURVEY\nwhere SURVEY.NAME is not null", query.toString());
}
@Test
public void Join_To_Function_With_Alias() {
SQLQuery query = query();
query.from(survey).join(RelationalFunctionCall.create(Survey.class, "functionCall"), Expressions.path(Survey.class, "fc"));
query.where(survey.name.isNotNull());
assertEquals("from SURVEY SURVEY\njoin functionCall() as fc\nwhere SURVEY.NAME is not null", query.toString());
}
@Test
public void Join_To_Function_In_Derby() {
SQLQuery query = new SQLQuery(new DerbyTemplates());
query.from(survey).join(RelationalFunctionCall.create(Survey.class, "functionCall"), Expressions.path(Survey.class, "fc"));
query.where(survey.name.isNotNull());
assertEquals("from SURVEY SURVEY\njoin table(functionCall()) as fc\nwhere SURVEY.NAME is not null", query.toString());
}
@Test
public void Keyword_After_Dot() {
SQLQuery query = new SQLQuery(MySQLTemplates.DEFAULT);
PathBuilder<Survey> surveyBuilder = new PathBuilder<Survey>(Survey.class, "survey");
query.from(surveyBuilder).where(surveyBuilder.get("not").isNotNull());
assertFalse(query.toString().contains("`"));
}
@Test
public void Like() {
Expression<?> expr = Expressions.stringTemplate("'%a%'").contains("%a%");
SQLSerializer serializer = new SQLSerializer(Configuration.DEFAULT);
serializer.handle(expr);
assertEquals("'%a%' like ? escape '\\'", serializer.toString());
}
@Test
public void Override() {
Configuration conf = new Configuration(new DerbyTemplates());
conf.registerTableOverride("SURVEY", "surveys");
SQLQuery query = new SQLQuery(conf);
query.from(survey);
assertEquals("from surveys SURVEY", query.toString());
}
@Test
public void ColumnOverrides() {
Configuration conf = new Configuration(new DerbyTemplates());
conf.registerColumnOverride("SURVEY", "NAME", "LABEL");
SQLQuery query = new SQLQuery(conf);
query.from(survey).where(survey.name.isNull());
assertEquals("from SURVEY SURVEY\n" +
"where SURVEY.LABEL is null", query.toString());
}
@Test
public void ColumnOverrides2() {
Configuration conf = new Configuration(new DerbyTemplates());
conf.registerColumnOverride("PUBLIC", "SURVEY", "NAME", "LABEL");
SQLQuery query = new SQLQuery(conf);
query.from(survey).where(survey.name.isNull());
assertEquals("from SURVEY SURVEY\n" +
"where SURVEY.LABEL is null", query.toString());
}
@Test
public void Complex_SubQuery() {
// create sub queries
List<SubQueryExpression<Tuple>> sq = new ArrayList<SubQueryExpression<Tuple>>();
String[] strs = new String[]{"a","b","c"};
for(String str : strs) {
Expression<Boolean> alias = Expressions.cases().when(survey.name.eq(str)).then(true).otherwise(false);
sq.add(sq().from(survey).distinct().unique(survey.name, alias));
}
// master query
PathBuilder<Tuple> subAlias = new PathBuilder<Tuple>(Tuple.class, "sub");
SubQueryExpression<?> master = sq()
.from(sq().union(sq).as(subAlias))
.groupBy(subAlias.get("prop1"))
.list(subAlias.get("prop2"));
SQLSerializer serializer = new SQLSerializer(Configuration.DEFAULT);
serializer.serialize(master.getMetadata(), false);
System.err.println(serializer);
}
private SQLQuery query() {
return new SQLQuery(Configuration.DEFAULT);
}
private SQLSubQuery sq() {
return new SQLSubQuery();
}
@Test
public void Boolean() {
QSurvey s = new QSurvey("s");
BooleanBuilder bb1 = new BooleanBuilder();
bb1.and(s.name.eq(s.name));
BooleanBuilder bb2 = new BooleanBuilder();
bb2.or(s.name.eq(s.name));
bb2.or(s.name.eq(s.name));
String str = new SQLSerializer(Configuration.DEFAULT).handle(bb1.and(bb2)).toString();
assertEquals("s.NAME = s.NAME and (s.NAME = s.NAME or s.NAME = s.NAME)", str);
}
@Test
public void List_In_Query() {
Expression<?> expr = Expressions.list(survey.id, survey.name).in(sq().from(survey).list(survey.id, survey.name));
String str = new SQLSerializer(Configuration.DEFAULT).handle(expr).toString();
assertEquals("(SURVEY.ID, SURVEY.NAME) in (select SURVEY.ID, SURVEY.NAME\nfrom SURVEY SURVEY)", str);
}
@Test
public void WithRecursive() {
/*with sub (id, firstname, superior_id) as (
select id, firstname, superior_id from employee where firstname like 'Mike'
union all
select employee.id, employee.firstname, employee.superior_id from sub, employee
where employee.superior_id = sub.id)
select * from sub;*/
QEmployee e = QEmployee.employee;
PathBuilder<Tuple> sub = new PathBuilder<Tuple>(Tuple.class, "sub");
SQLQuery query = new SQLQuery(SQLTemplates.DEFAULT);
query.withRecursive(sub,
sq().unionAll(
sq().from(e).where(e.firstname.eq("Mike"))
.list(e.id, e.firstname, e.superiorId),
sq().from(e, sub).where(e.superiorId.eq(sub.get(e.id)))
.list(e.id, e.firstname, e.superiorId)))
.from(sub);
QueryMetadata md = query.getMetadata();
md.addProjection(Wildcard.all);
SQLSerializer serializer = new SQLSerializer(Configuration.DEFAULT);
serializer.serialize(md, false);
assertEquals("with recursive sub as ((select EMPLOYEE.ID, EMPLOYEE.FIRSTNAME, EMPLOYEE.SUPERIOR_ID\n" +
"from EMPLOYEE EMPLOYEE\n" +
"where EMPLOYEE.FIRSTNAME = ?)\n" +
"union all\n" +
"(select EMPLOYEE.ID, EMPLOYEE.FIRSTNAME, EMPLOYEE.SUPERIOR_ID\n" +
"from EMPLOYEE EMPLOYEE, sub\n" +
"where EMPLOYEE.SUPERIOR_ID = sub.ID))\n" +
"select *\n" +
"from sub", serializer.toString());
}
@Test
public void WithRecursive2() {
/*with sub (id, firstname, superior_id) as (
select id, firstname, superior_id from employee where firstname like 'Mike'
union all
select employee.id, employee.firstname, employee.superior_id from sub, employee
where employee.superior_id = sub.id)
select * from sub;*/
QEmployee e = QEmployee.employee;
PathBuilder<Tuple> sub = new PathBuilder<Tuple>(Tuple.class, "sub");
SQLQuery query = new SQLQuery(SQLTemplates.DEFAULT);
query.withRecursive(sub, sub.get(e.id), sub.get(e.firstname), sub.get(e.superiorId)).as(
sq().unionAll(
sq().from(e).where(e.firstname.eq("Mike"))
.list(e.id, e.firstname, e.superiorId),
sq().from(e, sub).where(e.superiorId.eq(sub.get(e.id)))
.list(e.id, e.firstname, e.superiorId)))
.from(sub);
QueryMetadata md = query.getMetadata();
md.addProjection(Wildcard.all);
SQLSerializer serializer = new SQLSerializer(Configuration.DEFAULT);
serializer.serialize(md, false);
assertEquals("with recursive sub (ID, FIRSTNAME, SUPERIOR_ID) as ((select EMPLOYEE.ID, EMPLOYEE.FIRSTNAME, EMPLOYEE.SUPERIOR_ID\n" +
"from EMPLOYEE EMPLOYEE\n" +
"where EMPLOYEE.FIRSTNAME = ?)\n" +
"union all\n" +
"(select EMPLOYEE.ID, EMPLOYEE.FIRSTNAME, EMPLOYEE.SUPERIOR_ID\n" +
"from EMPLOYEE EMPLOYEE, sub\n" +
"where EMPLOYEE.SUPERIOR_ID = sub.ID))\n" +
"select *\n" +
"from sub", serializer.toString());
}
@Test
public void UseLiterals() {
SQLSerializer serializer = new SQLSerializer(Configuration.DEFAULT);
serializer.setUseLiterals(true);
int offset = TimeZone.getDefault().getRawOffset();
Expression<?> expr = SQLExpressions.datediff(DatePart.year, employee.datefield, new java.sql.Date(-offset));
serializer.handle(expr);
assertEquals("datediff('year',EMPLOYEE.DATEFIELD,(date '1970-01-01'))", serializer.toString());
}
}