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HHH-12302: Schema creation uses non-unicode string types on SAP HANA 

- add Parameter hibernate.dialect.hana.use_unicode_string_types that allows
  switching the database string types to unicode (nvarchar, nchar, nclob)
This commit is contained in:
Jonathan Bregler 2018-02-16 12:42:41 +01:00 committed by Vlad Mihalcea
parent 7a29fca061
commit ffb2ac0a9d
2 changed files with 240 additions and 5 deletions
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58
hibernate-core/src/main/java/org/hibernate/dialect/AbstractHANADialect.java
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@ -91,10 +91,14 @@ import org.hibernate.type.descriptor.sql.BasicExtractor;
import org.hibernate.type.descriptor.sql.BitTypeDescriptor;
import org.hibernate.type.descriptor.sql.BlobTypeDescriptor;
import org.hibernate.type.descriptor.sql.BooleanTypeDescriptor;
import org.hibernate.type.descriptor.sql.CharTypeDescriptor;
import org.hibernate.type.descriptor.sql.ClobTypeDescriptor;
import org.hibernate.type.descriptor.sql.NCharTypeDescriptor;
import org.hibernate.type.descriptor.sql.NClobTypeDescriptor;
import org.hibernate.type.descriptor.sql.NVarcharTypeDescriptor;
import org.hibernate.type.descriptor.sql.SmallIntTypeDescriptor;
import org.hibernate.type.descriptor.sql.SqlTypeDescriptor;
import org.hibernate.type.descriptor.sql.VarcharTypeDescriptor;
/**
* An abstract base class for HANA dialects. <br/>
@ -418,9 +422,11 @@ public abstract class AbstractHANADialect extends Dialect {
private static final long serialVersionUID = -379042275442752102L;
final int maxLobPrefetchSize;
final boolean useUnicodeStringTypes;
public HANAClobTypeDescriptor(int maxLobPrefetchSize) {
public HANAClobTypeDescriptor(int maxLobPrefetchSize, boolean useUnicodeStringTypes) {
this.maxLobPrefetchSize = maxLobPrefetchSize;
this.useUnicodeStringTypes = useUnicodeStringTypes;
}
@Override
@ -470,7 +476,14 @@ public abstract class AbstractHANADialect extends Dialect {
@Override
protected X doExtract(ResultSet rs, String name, WrapperOptions options) throws SQLException {
Clob rsClob = rs.getClob( name );
Clob rsClob;
if ( HANAClobTypeDescriptor.this.useUnicodeStringTypes ) {
rsClob = rs.getNClob( name );
}
else {
rsClob = rs.getClob( name );
}
if ( rsClob == null || rsClob.length() < HANAClobTypeDescriptor.this.maxLobPrefetchSize ) {
return javaTypeDescriptor.wrap( rsClob, options );
}
@ -493,6 +506,10 @@ public abstract class AbstractHANADialect extends Dialect {
public int getMaxLobPrefetchSize() {
return this.maxLobPrefetchSize;
}
public boolean isUseUnicodeStringTypes() {
return this.useUnicodeStringTypes;
}
}
private static class HANANClobTypeDescriptor extends NClobTypeDescriptor {
@ -666,17 +683,21 @@ public abstract class AbstractHANADialect extends Dialect {
private static final String MAX_LOB_PREFETCH_SIZE_PARAMETER_NAME = new String( "hibernate.dialect.hana.max_lob_prefetch_size" );
private static final String USE_LEGACY_BOOLEAN_TYPE_PARAMETER_NAME = new String( "hibernate.dialect.hana.use_legacy_boolean_type" );
private static final String USE_UNICODE_STRING_TYPES_PARAMETER_NAME = new String( "hibernate.dialect.hana.use_unicode_string_types" );
private static final int MAX_LOB_PREFETCH_SIZE_DEFAULT_VALUE = 1024;
private static final Boolean USE_LEGACY_BOOLEAN_TYPE_DEFAULT_VALUE = Boolean.FALSE;
private static final Boolean USE_UNICODE_STRING_TYPES_DEFAULT_VALUE = Boolean.FALSE;
private HANANClobTypeDescriptor nClobTypeDescriptor = new HANANClobTypeDescriptor( MAX_LOB_PREFETCH_SIZE_DEFAULT_VALUE );
private HANABlobTypeDescriptor blobTypeDescriptor = new HANABlobTypeDescriptor( MAX_LOB_PREFETCH_SIZE_DEFAULT_VALUE );
private HANAClobTypeDescriptor clobTypeDescriptor = new HANAClobTypeDescriptor( MAX_LOB_PREFETCH_SIZE_DEFAULT_VALUE );
private HANAClobTypeDescriptor clobTypeDescriptor = new HANAClobTypeDescriptor( MAX_LOB_PREFETCH_SIZE_DEFAULT_VALUE,
USE_UNICODE_STRING_TYPES_DEFAULT_VALUE );
private boolean useLegacyBooleanType = USE_LEGACY_BOOLEAN_TYPE_DEFAULT_VALUE.booleanValue();
private boolean useUnicodeStringTypes = USE_UNICODE_STRING_TYPES_DEFAULT_VALUE.booleanValue();
/*
* Tables named "TYPE" need to be quoted
@ -736,15 +757,19 @@ public abstract class AbstractHANADialect extends Dialect {
registerColumnType( Types.LONGVARBINARY, "blob" );
registerColumnType( Types.CHAR, "varchar(1)" );
registerColumnType( Types.NCHAR, "nvarchar(1)" );
registerColumnType( Types.VARCHAR, 5000, "varchar($l)" );
registerColumnType( Types.LONGVARCHAR, 5000, "varchar($l)" );
registerColumnType( Types.NVARCHAR, 5000, "nvarchar($l)" );
registerColumnType( Types.LONGNVARCHAR, 5000, "nvarchar($l)" );
// for longer values map to clob/nclob
registerColumnType( Types.LONGVARCHAR, "clob" );
registerColumnType( Types.VARCHAR, "clob" );
registerColumnType( Types.LONGNVARCHAR, "nclob" );
registerColumnType( Types.NVARCHAR, "nclob" );
registerColumnType( Types.CLOB, "clob" );
registerColumnType( Types.NCLOB, "nclob" );
registerColumnType( Types.BOOLEAN, "boolean" );
@ -1088,6 +1113,10 @@ public abstract class AbstractHANADialect extends Dialect {
return SmallIntTypeDescriptor.INSTANCE;
case Types.BOOLEAN:
return this.useLegacyBooleanType ? BitTypeDescriptor.INSTANCE : BooleanTypeDescriptor.INSTANCE;
case Types.VARCHAR:
return this.useUnicodeStringTypes ? NVarcharTypeDescriptor.INSTANCE : VarcharTypeDescriptor.INSTANCE;
case Types.CHAR:
return this.useUnicodeStringTypes ? NCharTypeDescriptor.INSTANCE : CharTypeDescriptor.INSTANCE;
default:
return super.getSqlTypeDescriptorOverride( sqlCode );
}
@ -1504,12 +1533,31 @@ public abstract class AbstractHANADialect extends Dialect {
this.blobTypeDescriptor = new HANABlobTypeDescriptor( maxLobPrefetchSize );
}
if ( this.clobTypeDescriptor.getMaxLobPrefetchSize() != maxLobPrefetchSize ) {
this.clobTypeDescriptor = new HANAClobTypeDescriptor( maxLobPrefetchSize );
boolean useUnicodeStringTypes = configurationService.getSetting( USE_UNICODE_STRING_TYPES_PARAMETER_NAME, StandardConverters.BOOLEAN,
USE_UNICODE_STRING_TYPES_DEFAULT_VALUE ).booleanValue();
if ( useUnicodeStringTypes ) {
registerColumnType( Types.CHAR, "nvarchar(1)" );
registerColumnType( Types.VARCHAR, 5000, "nvarchar($l)" );
registerColumnType( Types.LONGVARCHAR, 5000, "nvarchar($l)" );
// for longer values map to clob/nclob
registerColumnType( Types.LONGVARCHAR, "nclob" );
registerColumnType( Types.VARCHAR, "nclob" );
registerColumnType( Types.CLOB, "nclob" );
}
if ( this.clobTypeDescriptor.getMaxLobPrefetchSize() != maxLobPrefetchSize
|| this.clobTypeDescriptor.isUseUnicodeStringTypes() != useUnicodeStringTypes ) {
this.clobTypeDescriptor = new HANAClobTypeDescriptor( maxLobPrefetchSize, useUnicodeStringTypes );
}
this.useLegacyBooleanType = configurationService.getSetting( USE_LEGACY_BOOLEAN_TYPE_PARAMETER_NAME, StandardConverters.BOOLEAN,
USE_LEGACY_BOOLEAN_TYPE_DEFAULT_VALUE ).booleanValue();
if ( this.useLegacyBooleanType ) {
registerColumnType( Types.BOOLEAN, "tinyint" );
}
}
public SqlTypeDescriptor getBlobTypeDescriptor() {

187
hibernate-core/src/test/java/org/hibernate/test/schemaupdate/HANASchemaMigrationTargetScriptCreationTest.java Normal file
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@ -0,0 +1,187 @@
/*
* 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.test.schemaupdate;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Lob;
import javax.persistence.Table;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.util.EnumSet;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.spi.MetadataImplementor;
import org.hibernate.cfg.Configuration;
import org.hibernate.cfg.Environment;
import org.hibernate.dialect.AbstractHANADialect;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.tool.hbm2ddl.SchemaExport;
import org.hibernate.tool.schema.TargetType;
import org.junit.After;
import org.junit.Test;
import org.hibernate.testing.RequiresDialect;
import org.hibernate.testing.ServiceRegistryBuilder;
import org.hibernate.testing.TestForIssue;
import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;
import static org.hamcrest.core.Is.is;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.fail;
/**
* @author Jonathan Bregler
*/
@RequiresDialect(value = AbstractHANADialect.class)
public class HANASchemaMigrationTargetScriptCreationTest extends BaseCoreFunctionalTestCase {
private File output;
@Override
protected Class<?>[] getAnnotatedClasses() {
return new Class[]{ TestEntity.class };
}
@Override
protected boolean createSchema() {
return false;
}
@Override
protected void configure(Configuration configuration) {
try {
output = File.createTempFile( "update_script", ".sql" );
}
catch (IOException e) {
fail( e.getMessage() );
}
output.deleteOnExit();
configuration.setProperty( Environment.HBM2DDL_SCRIPTS_ACTION, "create" );
configuration.setProperty( Environment.HBM2DDL_SCRIPTS_CREATE_TARGET, output.getAbsolutePath() );
}
@After
public void tearDown() {
ServiceRegistry serviceRegistry = ServiceRegistryBuilder.buildServiceRegistry( Environment.getProperties() );
try {
MetadataImplementor metadata = (MetadataImplementor) new MetadataSources( serviceRegistry )
.addAnnotatedClass( TestEntity.class )
.buildMetadata();
metadata.validate();
new SchemaExport().drop( EnumSet.of( TargetType.DATABASE, TargetType.STDOUT ), metadata );
}
finally {
ServiceRegistryBuilder.destroy( serviceRegistry );
}
}
@Test
@TestForIssue(jiraKey = "HHH-12302")
public void testTargetScriptIsCreatedStringTypeDefault() throws Exception {
this.rebuildSessionFactory();
String fileContent = new String( Files.readAllBytes( output.toPath() ) );
Pattern fileContentPattern = Pattern.compile( "create( (column|row))? table test_entity \\(field varchar.+, b boolean.+, c varchar.+, lob clob.+" );
Matcher fileContentMatcher = fileContentPattern.matcher( fileContent.toLowerCase() );
assertThat(
"Script file : " + fileContent.toLowerCase(),
fileContentMatcher.find(),
is( true ) );
}
@Test
@TestForIssue(jiraKey = "HHH-12302")
public void testTargetScriptIsCreatedStringTypeNVarchar() throws Exception {
this.rebuildSessionFactory( config -> {
config.setProperty( "hibernate.dialect.hana.use_unicode_string_types", "true" );
} );
String fileContent = new String( Files.readAllBytes( output.toPath() ) );
Pattern fileContentPattern = Pattern.compile( "create( (column|row))? table test_entity \\(field nvarchar.+, b boolean.+, c nvarchar.+, lob nclob" );
Matcher fileContentMatcher = fileContentPattern.matcher( fileContent.toLowerCase() );
assertThat(
"Script file : " + fileContent.toLowerCase(),
fileContentMatcher.find(),
is( true ) );
}
@Test
@TestForIssue(jiraKey = "HHH-12302")
public void testTargetScriptIsCreatedStringTypeVarchar() throws Exception {
this.rebuildSessionFactory( config -> {
config.setProperty( "hibernate.dialect.hana.use_nvarchar_string_type", "false" );
} );
String fileContent = new String( Files.readAllBytes( output.toPath() ) );
Pattern fileContentPattern = Pattern.compile( "create( (column|row))? table test_entity \\(field varchar.+, b boolean.+, c varchar.+, lob clob" );
Matcher fileContentMatcher = fileContentPattern.matcher( fileContent.toLowerCase() );
assertThat(
"Script file : " + fileContent.toLowerCase(),
fileContentMatcher.find(),
is( true ) );
}
@Test
@TestForIssue(jiraKey = "HHH-12132")
public void testTargetScriptIsCreatedBooleanTypeDefault() throws Exception {
this.rebuildSessionFactory();
String fileContent = new String( Files.readAllBytes( output.toPath() ) );
Pattern fileContentPattern = Pattern.compile( "create( (column|row))? table test_entity \\(field varchar.+, b boolean.+, c varchar.+, lob clob" );
Matcher fileContentMatcher = fileContentPattern.matcher( fileContent.toLowerCase() );
assertThat(
"Script file : " + fileContent.toLowerCase(),
fileContentMatcher.find(),
is( true ) );
}
@Test
@TestForIssue(jiraKey = "HHH-12132")
public void testTargetScriptIsCreatedBooleanTypeLegacy() throws Exception {
this.rebuildSessionFactory( config -> {
config.setProperty( "hibernate.dialect.hana.use_legacy_boolean_type", "true" );
} );
String fileContent = new String( Files.readAllBytes( output.toPath() ) );
Pattern fileContentPattern = Pattern.compile( "create( (column|row))? table test_entity \\(field varchar.+, b tinyint.+, c varchar.+, lob clob" );
Matcher fileContentMatcher = fileContentPattern.matcher( fileContent.toLowerCase() );
assertThat(
"Script file : " + fileContent.toLowerCase(),
fileContentMatcher.find(),
is( true ) );
}
@Test
@TestForIssue(jiraKey = "HHH-12132")
public void testTargetScriptIsCreatedBooleanType() throws Exception {
this.rebuildSessionFactory( config -> {
config.setProperty( "hibernate.dialect.hana.use_legacy_boolean_type", "false" );
} );
String fileContent = new String( Files.readAllBytes( output.toPath() ) );
Pattern fileContentPattern = Pattern.compile( "create( (column|row))? table test_entity \\(field varchar.+, b boolean.+, c varchar.+, lob clob" );
Matcher fileContentMatcher = fileContentPattern.matcher( fileContent.toLowerCase() );
assertThat(
"Script file : " + fileContent.toLowerCase(),
fileContentMatcher.find(),
is( true ) );
}
@Entity
@Table(name = "test_entity")
public static class TestEntity {
@Id
private String field;
private char c;
@Lob
private String lob;
private boolean b;
}
}