/*
* 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 static com.querydsl.sql.SQLExpressions.*;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import java.sql.Connection;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.TimeZone;
import com.querydsl.core.types.*;
import com.querydsl.sql.dml.SQLDeleteClause;
import org.easymock.EasyMock;
import org.junit.Test;
import com.querydsl.core.BooleanBuilder;
import com.querydsl.core.QueryMetadata;
import com.querydsl.core.Tuple;
import com.querydsl.core.types.dsl.*;
import com.querydsl.sql.domain.QEmployee;
import com.querydsl.sql.domain.QEmployeeNoPK;
import com.querydsl.sql.domain.QSurvey;
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);
SQLQuery<?> query = new SQLQuery<Void>();
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 postgresql = new Configuration(new PostgreSQLTemplates());
SQLSerializer serializer = new SQLSerializer(postgresql);
SQLQuery<?> query = new SQLQuery<Void>();
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 = select(idPath, usernamePath)
.from(userPath).where(idPath.eq(1L));
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 = select(idPath, usernamePath)
.from(userPath).where(idPath.eq(1L));
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 in() {
StringPath path = Expressions.stringPath("str");
Expression<?> expr = ExpressionUtils.in(path, Arrays.asList("1", "2", "3"));
SQLSerializer serializer = new SQLSerializer(Configuration.DEFAULT);
serializer.handle(expr);
assertEquals(Arrays.asList(path, path, path), serializer.getConstantPaths());
assertEquals(3, serializer.getConstants().size());
}
@Test
public void fullJoinWithoutCodeGeneration() {
SQLQuery<?> sqlQuery = queryForMYSQLTemplate();
PathBuilder<Object> customerPath = new PathBuilder<Object>(Object.class, "customer");
PathBuilder<Object> deptPath = new PathBuilder<Object>(Object.class, "department");
Path<Object> deptAliasPath = new PathBuilder<Object>(Object.class, "d");
sqlQuery = sqlQuery.from(customerPath.as("c"));
NumberPath<Long> idPath = Expressions.numberPath(Long.class, deptAliasPath, "id");
sqlQuery = sqlQuery.fullJoin(deptPath, deptAliasPath).select(idPath);
assertEquals("select d.id from customer as c full join department as d", sqlQuery.toString());
}
@Test
public void innerJoinWithoutCodeGeneration() {
SQLQuery<?> sqlQuery = queryForMYSQLTemplate();
PathBuilder<Object> customerPath = new PathBuilder<Object>(Object.class, "customer");
PathBuilder<Object> deptPath = new PathBuilder<Object>(Object.class, "department");
Path<Object> deptAliasPath = new PathBuilder<Object>(Object.class, "d");
sqlQuery = sqlQuery.from(customerPath.as("c"));
NumberPath<Long> idPath = Expressions.numberPath(Long.class, deptAliasPath, "id");
sqlQuery = sqlQuery.innerJoin(deptPath, deptAliasPath).select(idPath);
assertEquals("select d.id from customer as c inner join department as d", sqlQuery.toString());
}
@Test
public void joinWithoutCodeGeneration() {
SQLQuery<?> sqlQuery = queryForMYSQLTemplate();
PathBuilder<Object> customerPath = new PathBuilder<Object>(Object.class, "customer");
PathBuilder<Object> deptPath = new PathBuilder<Object>(Object.class, "department");
Path<Object> deptAliasPath = new PathBuilder<Object>(Object.class, "d");
sqlQuery = sqlQuery.from(customerPath.as("c"));
NumberPath<Long> idPath = Expressions.numberPath(Long.class, deptAliasPath, "id");
sqlQuery = sqlQuery.join(deptPath, deptAliasPath).select(idPath);
assertEquals("select d.id from customer as c join department as d", sqlQuery.toString());
}
@Test
public void leftJoinWithoutCodeGeneration() {
SQLQuery<?> sqlQuery = queryForMYSQLTemplate();
PathBuilder<Object> customerPath = new PathBuilder<Object>(Object.class, "customer");
PathBuilder<Object> deptPath = new PathBuilder<Object>(Object.class, "department");
Path<Object> deptAliasPath = new PathBuilder<Object>(Object.class, "d");
sqlQuery = sqlQuery.from(customerPath.as("c"));
NumberPath<Long> idPath = Expressions.numberPath(Long.class, deptAliasPath, "id");
sqlQuery = sqlQuery.leftJoin(deptPath, deptAliasPath).select(idPath);
assertEquals("select d.id from customer as c left join department as d", sqlQuery.toString());
}
@Test
public void or_in() {
StringPath path = Expressions.stringPath("str");
Expression<?> expr = ExpressionUtils.anyOf(
ExpressionUtils.in(path, Arrays.asList("1", "2", "3")),
ExpressionUtils.in(path, Arrays.asList("4", "5", "6")));
SQLSerializer serializer = new SQLSerializer(Configuration.DEFAULT);
serializer.handle(expr);
assertEquals(Arrays.asList(path, path, path, path, path, path), serializer.getConstantPaths());
assertEquals(6, serializer.getConstants().size());
}
@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(SQLExpressions.relationalFunctionCall(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<Void>(DerbyTemplates.DEFAULT);
query.from(survey).join(SQLExpressions.relationalFunctionCall(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 crossJoin() {
SQLTemplates templates = new DerbyTemplates();
templates.setCrossJoin(" cross join ");
SQLQuery<?> query = new SQLQuery<Void>(templates);
query.from(survey, employee);
assertEquals("from SURVEY SURVEY cross join EMPLOYEE EMPLOYEE", query.toString());
}
@Test
public void keyword_after_dot() {
SQLQuery<?> query = new SQLQuery<Void>(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<Void>(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<Void>(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<Void>(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(select(survey.name, alias).from(survey).distinct());
}
// master query
PathBuilder<Tuple> subAlias = new PathBuilder<Tuple>(Tuple.class, "sub");
SubQueryExpression<?> master = selectOne()
.from(union(sq).as(subAlias))
.groupBy(subAlias.get("prop1"));
SQLSerializer serializer = new SQLSerializer(Configuration.DEFAULT);
serializer.serialize(master.getMetadata(), false);
System.err.println(serializer);
}
@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(select(survey.id, survey.name).from(survey));
String str = new SQLSerializer(Configuration.DEFAULT).handle(expr).toString();
assertEquals("(SURVEY.ID, SURVEY.NAME) in (select SURVEY.ID, SURVEY.NAME\nfrom SURVEY SURVEY)", str);
}
@SuppressWarnings("unchecked")
@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<Void>(SQLTemplates.DEFAULT);
query.withRecursive(sub,
unionAll(
select(e.id, e.firstname, e.superiorId).from(e).where(e.firstname.eq("Mike")),
select(e.id, e.firstname, e.superiorId).from(e, sub).where(e.superiorId.eq(sub.get(e.id)))))
.from(sub);
QueryMetadata md = query.getMetadata();
md.setProjection(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());
}
@SuppressWarnings("unchecked")
@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<Void>(SQLTemplates.DEFAULT);
query.withRecursive(sub, sub.get(e.id), sub.get(e.firstname), sub.get(e.superiorId)).as(
unionAll(
select(e.id, e.firstname, e.superiorId).from(e).where(e.firstname.eq("Mike")),
select(e.id, e.firstname, e.superiorId).from(e, sub).where(e.superiorId.eq(sub.get(e.id)))))
.from(sub);
QueryMetadata md = query.getMetadata();
md.setProjection(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());
}
@Test
public void select_normalization() {
SQLSerializer serializer = new SQLSerializer(Configuration.DEFAULT);
serializer.visit(select(
Expressions.stringPath("id"), Expressions.stringPath("ID")), null);
assertEquals("(select id, ID as col__ID1\n" +
"from dual)", serializer.toString());
}
@Test
public void noSchemaInWhere() {
Configuration defaultWithPrintSchema = new Configuration(new SQLTemplates(Keywords.DEFAULT, "\"", '\\', false, false));
defaultWithPrintSchema.getTemplates().setPrintSchema(true);
QEmployee e = QEmployee.employee;
SQLDeleteClause delete = new SQLDeleteClause(EasyMock.createNiceMock(Connection.class), defaultWithPrintSchema, e);
delete.where(e.id.gt(100));
assertEquals("delete from PUBLIC.EMPLOYEE\n" +
"where EMPLOYEE.ID > ?", delete.toString());
}
@Test
public void schemaInWhere() {
Configuration derbyWithPrintSchema = new Configuration(DerbyTemplates.builder().printSchema().build());
QEmployee e = QEmployee.employee;
SQLDeleteClause delete = new SQLDeleteClause(EasyMock.createNiceMock(Connection.class), derbyWithPrintSchema, e);
delete.where(e.id.gt(100));
assertEquals("delete from \"PUBLIC\".EMPLOYEE\n" +
"where \"PUBLIC\".EMPLOYEE.ID > ?", delete.toString());
}
private SQLQuery<?> query() {
return new SQLQuery<Void>();
}
private SQLQuery<?> queryForMYSQLTemplate() {
return new SQLQuery<Void>(MySQLTemplates.builder().printSchema().newLineToSingleSpace().build());
}
}