Hibernate
/
hibernate-orm
mirror of https://github.com/hibernate/hibernate-orm
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

HHH-16185 Implement portable date_trunc function emulation and tests

This commit is contained in:
Marco Belladelli 2023-02-14 22:11:45 +01:00 committed by Christian Beikov
parent 3864b71696
commit 821e31b481
14 changed files with 367 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/HSQLLegacyDialect.java
View File

@ -201,6 +201,7 @@ public class HSQLLegacyDialect extends Dialect {
functionFactory.rand();
functionFactory.trunc();
// functionFactory.truncate();
functionFactory.dateTrunc_trunc();
functionFactory.pi();
functionFactory.soundex();
functionFactory.reverse();

1
hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/MySQLLegacyDialect.java
View File

@ -562,6 +562,7 @@ public class MySQLLegacyDialect extends Dialect {
functionFactory.position();
functionFactory.nowCurdateCurtime();
functionFactory.trunc_truncate();
functionFactory.dateTrunc_format( "str_to_date", false );
functionFactory.insert();
functionFactory.bitandorxornot_operator();
functionFactory.bitAndOr();

4
hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/SQLServerLegacyDialect.java
View File

@ -366,6 +366,10 @@ public class SQLServerLegacyDialect extends AbstractTransactSQLDialect {
}
if ( getVersion().isSameOrAfter( 16 ) ) {
functionFactory.leastGreatest();
functionFactory.dateTrunc_datetrunc();
}
else {
functionFactory.dateTrunc_format( "convert", false );
}
}

1
hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/SybaseLegacyDialect.java
View File

@ -218,6 +218,7 @@ public class SybaseLegacyDialect extends AbstractTransactSQLDialect {
functionFactory.varPopSamp();
functionFactory.trunc_floorPower();
functionFactory.round_round();
functionFactory.dateTrunc_format( "convert", true );
// For SQL-Server we need to cast certain arguments to varchar(16384) to be able to concat them
functionContributions.getFunctionRegistry().register(

1
hibernate-core/src/main/java/org/hibernate/dialect/AbstractHANADialect.java
View File

@ -398,6 +398,7 @@ public abstract class AbstractHANADialect extends Dialect {
functionFactory.sinh();
functionFactory.tanh();
functionFactory.trunc_roundMode();
functionFactory.dateTrunc_format( "to_date", false );
functionFactory.log10_log();
functionFactory.log();
functionFactory.bitand();

1
hibernate-core/src/main/java/org/hibernate/dialect/HSQLDialect.java
View File

@ -142,6 +142,7 @@ public class HSQLDialect extends Dialect {
functionFactory.rand();
functionFactory.trunc();
// functionFactory.truncate();
functionFactory.dateTrunc_trunc();
functionFactory.pi();
functionFactory.soundex();
functionFactory.reverse();

1
hibernate-core/src/main/java/org/hibernate/dialect/MySQLDialect.java
View File

@ -561,6 +561,7 @@ public class MySQLDialect extends Dialect {
functionFactory.position();
functionFactory.nowCurdateCurtime();
functionFactory.trunc_truncate();
functionFactory.dateTrunc_format( "str_to_date", false );
functionFactory.insert();
functionFactory.bitandorxornot_operator();
functionFactory.bitAndOr();

4
hibernate-core/src/main/java/org/hibernate/dialect/SQLServerDialect.java
View File

@ -370,6 +370,10 @@ public class SQLServerDialect extends AbstractTransactSQLDialect {
}
if ( getVersion().isSameOrAfter( 16 ) ) {
functionFactory.leastGreatest();
functionFactory.dateTrunc_datetrunc();
}
else {
functionFactory.dateTrunc_format( "convert", false );
}
}

3
hibernate-core/src/main/java/org/hibernate/dialect/SpannerDialect.java
View File

@ -38,6 +38,7 @@ import org.hibernate.persister.entity.Lockable;
import org.hibernate.query.SemanticException;
import org.hibernate.query.sqm.IntervalType;
import org.hibernate.query.sqm.TemporalUnit;
import org.hibernate.query.sqm.produce.function.StandardFunctionReturnTypeResolvers;
import org.hibernate.sql.ast.SqlAstTranslator;
import org.hibernate.sql.ast.SqlAstTranslatorFactory;
import org.hibernate.sql.ast.spi.SqlAppender;
@ -393,7 +394,7 @@ public class SpannerDialect extends Dialect {
.setExactArgumentCount( 3 )
.register();
functionContributions.getFunctionRegistry().namedDescriptorBuilder( "date_trunc" )
.setInvariantType( dateType )
.setReturnTypeResolver( StandardFunctionReturnTypeResolvers.useArgType( 2 ) )
.setExactArgumentCount( 2 )
.register();
functionContributions.getFunctionRegistry().namedDescriptorBuilder( "date_from_unix_date" )

1
hibernate-core/src/main/java/org/hibernate/dialect/SybaseDialect.java
View File

@ -222,6 +222,7 @@ public class SybaseDialect extends AbstractTransactSQLDialect {
functionFactory.varPopSamp();
functionFactory.trunc_floorPower();
functionFactory.round_round();
functionFactory.dateTrunc_format( "convert", true );
// For SQL-Server we need to cast certain arguments to varchar(16384) to be able to concat them
functionContributions.getFunctionRegistry().register(

26
hibernate-core/src/main/java/org/hibernate/dialect/function/CommonFunctionFactory.java
View File

@ -2560,20 +2560,30 @@ public class CommonFunctionFactory {
public void dateTrunc() {
functionRegistry.patternDescriptorBuilder( "date_trunc", "date_trunc('?1',?2)" )
.setInvariantType(timestampType)
.setReturnTypeResolver( useArgType( 2 ) )
.setExactArgumentCount( 2 )
.setParameterTypes(TEMPORAL_UNIT, TEMPORAL)
.setParameterTypes( TEMPORAL_UNIT, TEMPORAL )
.setArgumentListSignature( "(TEMPORAL_UNIT field, TEMPORAL datetime)" )
.register();
}
public void dateTrunc_datetrunc() {
functionRegistry.patternDescriptorBuilder( "date_trunc", "datetrunc(?1,?2)" )
.setReturnTypeResolver( useArgType( 2 ) )
.setExactArgumentCount( 2 )
.setParameterTypes( TEMPORAL_UNIT, TEMPORAL )
.setArgumentListSignature( "(TEMPORAL_UNIT field, TEMPORAL datetime)" )
.register();
}
public void dateTrunc_trunc() {
functionRegistry.patternDescriptorBuilder( "date_trunc", "trunc(?2,'?1')" )
.setInvariantType(timestampType)
.setExactArgumentCount( 2 )
.setParameterTypes(TEMPORAL_UNIT, TEMPORAL)
.setArgumentListSignature( "(TEMPORAL_UNIT field, TEMPORAL datetime)" )
.register();
functionRegistry.register( "date_trunc", new DateTruncTrunc( typeConfiguration ) );
}
public void dateTrunc_format(String toDateFunction, boolean useConvertToFormat) {
functionRegistry.register(
"date_trunc",
new DateTruncEmulation( toDateFunction, useConvertToFormat, typeConfiguration )
);
}
}

196
hibernate-core/src/main/java/org/hibernate/dialect/function/DateTruncEmulation.java Normal file
View File

@ -0,0 +1,196 @@
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later
* See the lgpl.txt file in the root directory or http://www.gnu.org/licenses/lgpl-2.1.html
*/
package org.hibernate.dialect.function;
import java.util.ArrayList;
import java.util.List;
import org.hibernate.query.ReturnableType;
import org.hibernate.query.spi.QueryEngine;
import org.hibernate.query.sqm.NodeBuilder;
import org.hibernate.query.sqm.TemporalUnit;
import org.hibernate.query.sqm.function.AbstractSqmFunctionDescriptor;
import org.hibernate.query.sqm.function.FunctionRenderingSupport;
import org.hibernate.query.sqm.function.SelfRenderingSqmFunction;
import org.hibernate.query.sqm.produce.function.ArgumentTypesValidator;
import org.hibernate.query.sqm.produce.function.StandardArgumentsValidators;
import org.hibernate.query.sqm.produce.function.StandardFunctionArgumentTypeResolvers;
import org.hibernate.query.sqm.produce.function.StandardFunctionReturnTypeResolvers;
import org.hibernate.query.sqm.tree.SqmTypedNode;
import org.hibernate.query.sqm.tree.expression.SqmDurationUnit;
import org.hibernate.query.sqm.tree.expression.SqmExpression;
import org.hibernate.query.sqm.tree.expression.SqmFormat;
import org.hibernate.query.sqm.tree.expression.SqmLiteral;
import org.hibernate.sql.ast.SqlAstTranslator;
import org.hibernate.sql.ast.spi.SqlAppender;
import org.hibernate.sql.ast.tree.SqlAstNode;
import org.hibernate.type.spi.TypeConfiguration;
import static java.util.Arrays.asList;
import static org.hibernate.query.sqm.produce.function.FunctionParameterType.TEMPORAL;
import static org.hibernate.query.sqm.produce.function.FunctionParameterType.TEMPORAL_UNIT;
/**
* Emulation of {@code datetrunc} function that leverages
* formatting the datetime to string and back to truncate it
*
* @author Marco Belladelli
*/
public class DateTruncEmulation extends AbstractSqmFunctionDescriptor implements FunctionRenderingSupport {
private final String toDateFunction;
private final boolean useConvertToFormat;
public DateTruncEmulation(String toDateFunction, boolean useConvertToFormat, TypeConfiguration typeConfiguration) {
super(
"date_trunc",
new ArgumentTypesValidator( StandardArgumentsValidators.exactly( 2 ), TEMPORAL_UNIT, TEMPORAL ),
StandardFunctionReturnTypeResolvers.useArgType( 2 ),
StandardFunctionArgumentTypeResolvers.invariant( typeConfiguration, TEMPORAL_UNIT, TEMPORAL )
);
this.toDateFunction = toDateFunction;
this.useConvertToFormat = useConvertToFormat;
}
@Override
public void render(
SqlAppender sqlAppender,
List<? extends SqlAstNode> sqlAstArguments,
SqlAstTranslator<?> walker) {
sqlAppender.appendSql( toDateFunction );
sqlAppender.append( '(' );
if ( !useConvertToFormat ) {
if ( toDateFunction.equalsIgnoreCase( "convert" ) ) {
sqlAppender.append( "datetime," );
sqlAstArguments.get( 0 ).accept( walker );
}
else {
sqlAstArguments.get( 0 ).accept( walker );
sqlAppender.append( ',' );
sqlAstArguments.get( 1 ).accept( walker );
}
}
else {
// custom implementation that uses convert instead of format for Sybase
// see: https://infocenter.sybase.com/help/index.jsp?topic=/com.sybase.infocenter.dc36271.1600/doc/html/san1393050437990.html
sqlAppender.append( "datetime,substring(convert(varchar," );
sqlAstArguments.get( 1 ).accept( walker );
sqlAppender.append( ",21),1,17-len(" );
sqlAstArguments.get( 0 ).accept( walker );
sqlAppender.append( "))+" );
sqlAstArguments.get( 0 ).accept( walker );
sqlAppender.append( ",21" );
}
sqlAppender.append( ')' );
}
@Override
protected <T> SelfRenderingSqmFunction<T> generateSqmFunctionExpression(
List<? extends SqmTypedNode<?>> arguments,
ReturnableType<T> impliedResultType,
QueryEngine queryEngine,
TypeConfiguration typeConfiguration) {
final NodeBuilder nodeBuilder = queryEngine.getCriteriaBuilder();
final TemporalUnit temporalUnit = ( (SqmDurationUnit<?>) arguments.get( 0 ) ).getUnit();
final String pattern;
final String literal;
switch ( temporalUnit ) {
case YEAR:
pattern = "yyyy";
literal = "-01-01 00:00:00";
break;
case MONTH:
pattern = "yyyy-MM";
literal = "-01 00:00:00";
break;
case DAY:
pattern = "yyyy-MM-dd";
literal = " 00:00:00";
break;
case HOUR:
pattern = "yyyy-MM-dd HH";
literal = ":00:00";
break;
case MINUTE:
pattern = "yyyy-MM-dd HH:mm";
literal = ":00";
break;
case SECOND:
pattern = "yyyy-MM-dd HH:mm:ss";
literal = null;
break;
default:
throw new UnsupportedOperationException( "Temporal unit not supported [" + temporalUnit + "]" );
}
final SqmTypedNode<?> datetime = arguments.get( 1 );
final List<SqmTypedNode<?>> args = new ArrayList<>( 2 );
if ( !useConvertToFormat ) {
// use standard format function
final SqmExpression<?> formatExpression = queryEngine.getSqmFunctionRegistry()
.findFunctionDescriptor( "format" )
.generateSqmExpression(
asList(
datetime,
new SqmFormat(
pattern,
typeConfiguration.getBasicTypeForJavaType( String.class ),
nodeBuilder
)
),
null,
queryEngine,
typeConfiguration
);
final SqmExpression<?> formattedDatetime;
if ( literal != null ) {
formattedDatetime = queryEngine.getSqmFunctionRegistry()
.findFunctionDescriptor( "concat" )
.generateSqmExpression(
asList(
formatExpression,
new SqmLiteral<>(
literal,
typeConfiguration.getBasicTypeForJavaType( String.class ),
nodeBuilder
)
),
null,
queryEngine,
typeConfiguration
);
}
else {
formattedDatetime = formatExpression;
}
args.add( formattedDatetime );
args.add( new SqmFormat(
"yyyy-MM-dd HH:mm:ss",
typeConfiguration.getBasicTypeForJavaType( String.class ),
nodeBuilder
) );
}
else {
args.add( new SqmLiteral<>(
literal != null ? literal.replace( "-", "/" ) : "",
typeConfiguration.getBasicTypeForJavaType( String.class ),
nodeBuilder
) );
args.add( datetime );
}
return new SelfRenderingSqmFunction<>(
this,
this,
args,
impliedResultType,
getArgumentsValidator(),
getReturnTypeResolver(),
nodeBuilder,
"date_trunc"
);
}
}

127
hibernate-core/src/main/java/org/hibernate/dialect/function/DateTruncTrunc.java Normal file
View File

@ -0,0 +1,127 @@
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later
* See the lgpl.txt file in the root directory or http://www.gnu.org/licenses/lgpl-2.1.html
*/
package org.hibernate.dialect.function;
import java.util.ArrayList;
import java.util.List;
import org.hibernate.dialect.OracleDialect;
import org.hibernate.query.ReturnableType;
import org.hibernate.query.spi.QueryEngine;
import org.hibernate.query.sqm.NodeBuilder;
import org.hibernate.query.sqm.TemporalUnit;
import org.hibernate.query.sqm.function.AbstractSqmFunctionDescriptor;
import org.hibernate.query.sqm.function.FunctionRenderingSupport;
import org.hibernate.query.sqm.function.SelfRenderingSqmFunction;
import org.hibernate.query.sqm.produce.function.ArgumentTypesValidator;
import org.hibernate.query.sqm.produce.function.StandardArgumentsValidators;
import org.hibernate.query.sqm.produce.function.StandardFunctionArgumentTypeResolvers;
import org.hibernate.query.sqm.produce.function.StandardFunctionReturnTypeResolvers;
import org.hibernate.query.sqm.tree.SqmTypedNode;
import org.hibernate.query.sqm.tree.expression.SqmDurationUnit;
import org.hibernate.query.sqm.tree.expression.SqmLiteral;
import org.hibernate.sql.ast.SqlAstTranslator;
import org.hibernate.sql.ast.spi.SqlAppender;
import org.hibernate.sql.ast.tree.SqlAstNode;
import org.hibernate.type.spi.TypeConfiguration;
import static org.hibernate.query.sqm.produce.function.FunctionParameterType.TEMPORAL;
import static org.hibernate.query.sqm.produce.function.FunctionParameterType.TEMPORAL_UNIT;
/**
* Trunc function which converts the {@link TemporalUnit}
* to the format required for {@code trunc()}
*
* @author Marco Belladelli
*/
public class DateTruncTrunc extends AbstractSqmFunctionDescriptor implements FunctionRenderingSupport {
public DateTruncTrunc(TypeConfiguration typeConfiguration) {
super(
"date_trunc",
new ArgumentTypesValidator( StandardArgumentsValidators.exactly( 2 ), TEMPORAL_UNIT, TEMPORAL ),
StandardFunctionReturnTypeResolvers.useArgType( 2 ),
StandardFunctionArgumentTypeResolvers.invariant( typeConfiguration, TEMPORAL_UNIT, TEMPORAL )
);
}
@Override
public void render(
SqlAppender sqlAppender,
List<? extends SqlAstNode> sqlAstArguments,
SqlAstTranslator<?> walker) {
sqlAppender.appendSql( "trunc(" );
sqlAstArguments.get( 1 ).accept( walker );
sqlAppender.append( ',' );
sqlAstArguments.get( 0 ).accept( walker );
sqlAppender.append( ')' );
}
@Override
protected <T> SelfRenderingSqmFunction<T> generateSqmFunctionExpression(
List<? extends SqmTypedNode<?>> arguments,
ReturnableType<T> impliedResultType,
QueryEngine queryEngine,
TypeConfiguration typeConfiguration) {
final NodeBuilder nodeBuilder = queryEngine.getCriteriaBuilder();
final TemporalUnit temporalUnit = ( (SqmDurationUnit<?>) arguments.get( 0 ) ).getUnit();
final String pattern;
switch ( temporalUnit ) {
case YEAR:
pattern = "YYYY";
break;
case MONTH:
pattern = "MM";
break;
case WEEK:
pattern = "IW";
break;
case DAY:
pattern = "DD";
break;
case HOUR:
pattern = "HH";
break;
case MINUTE:
pattern = "MI";
break;
case SECOND:
if ( nodeBuilder.getSessionFactory().getJdbcServices().getDialect() instanceof OracleDialect ) {
// Oracle does not support truncating to seconds with the native function, use emulation
return new DateTruncEmulation( "to_date", false, typeConfiguration )
.generateSqmFunctionExpression(
arguments,
impliedResultType,
queryEngine,
typeConfiguration
);
}
pattern = "SS";
break;
default:
throw new UnsupportedOperationException( "Temporal unit not supported [" + temporalUnit + "]" );
}
final List<SqmTypedNode<?>> args = new ArrayList<>( 2 );
args.add( new SqmLiteral<>(
pattern,
typeConfiguration.getBasicTypeForJavaType( String.class ),
nodeBuilder
) );
args.add( arguments.get( 1 ) );
return new SelfRenderingSqmFunction<>(
this,
this,
args,
impliedResultType,
getArgumentsValidator(),
getReturnTypeResolver(),
nodeBuilder,
"date_trunc"
);
}
}

14
hibernate-core/src/test/java/org/hibernate/orm/test/query/hql/FunctionTests.java
View File

@ -513,13 +513,17 @@ public class FunctionTests {
}
@Test
@RequiresDialect(H2Dialect.class)
@RequiresDialect(DB2Dialect.class)
@RequiresDialect(OracleDialect.class)
@RequiresDialect(PostgreSQLDialect.class)
@SkipForDialect(dialectClass = DerbyDialect.class, reason = "Derby doesn't support any form of date truncation")
public void testDateTruncFunction(SessionFactoryScope scope) {
scope.inTransaction(
session -> session.createQuery("select date_trunc(year,current_timestamp)", Timestamp.class).getSingleResult()
session -> {
session.createQuery( "select date_trunc(year,current_timestamp)", Timestamp.class ).getSingleResult();
session.createQuery( "select date_trunc(month,current_timestamp)", Timestamp.class ).getSingleResult();
session.createQuery( "select date_trunc(day,current_timestamp)", Timestamp.class ).getSingleResult();
session.createQuery( "select date_trunc(hour,current_timestamp)", Timestamp.class ).getSingleResult();
session.createQuery( "select date_trunc(minute,current_timestamp)", Timestamp.class ).getSingleResult();
session.createQuery( "select date_trunc(second,current_timestamp)", Timestamp.class ).getSingleResult();
}
);
}