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HHH-13229 - Sequences in MariaDB doesnt work on existing sequence
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115 changes: 115 additions & 0 deletions
115
...bernate/tool/schema/extract/internal/SequenceInformationExtractorMariaDBDatabaseImpl.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,115 @@ | ||
| /* | ||
| * 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.tool.schema.extract.internal; | ||
|
|
||
| import java.sql.ResultSet; | ||
| import java.sql.SQLException; | ||
| import java.sql.Statement; | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
|
|
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| import org.hibernate.boot.model.relational.QualifiedSequenceName; | ||
| import org.hibernate.engine.jdbc.env.spi.IdentifierHelper; | ||
| import org.hibernate.tool.schema.extract.spi.ExtractionContext; | ||
| import org.hibernate.tool.schema.extract.spi.SequenceInformation; | ||
|
|
||
| /** | ||
| * @author Vlad Mihalcea, Magnus Hagström | ||
| */ | ||
| public class SequenceInformationExtractorMariaDBDatabaseImpl extends SequenceInformationExtractorLegacyImpl { | ||
| /** | ||
| * Singleton access | ||
| */ | ||
| public static final SequenceInformationExtractorMariaDBDatabaseImpl INSTANCE = new SequenceInformationExtractorMariaDBDatabaseImpl(); | ||
|
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| // SQL to get metadata from individual sequence | ||
| private static final String SQL_SEQUENCE_QUERY = | ||
| "SELECT '%1$s' as sequence_name, minimum_value, maximum_value, start_value, increment, cache_size FROM %1$s "; | ||
|
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| private static final String UNION_ALL = | ||
| "UNION ALL "; | ||
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| @Override | ||
| public Iterable<SequenceInformation> extractMetadata(ExtractionContext extractionContext) throws SQLException { | ||
| final String lookupSql = extractionContext.getJdbcEnvironment().getDialect().getQuerySequencesString(); | ||
|
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| // *should* never happen, but to be safe in the interest of performance... | ||
| if (lookupSql == null) { | ||
| return SequenceInformationExtractorNoOpImpl.INSTANCE.extractMetadata(extractionContext); | ||
| } | ||
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| final IdentifierHelper identifierHelper = extractionContext.getJdbcEnvironment().getIdentifierHelper(); | ||
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| final List<SequenceInformation> sequenceInformationList = new ArrayList<>(); | ||
| final List<String> sequenceNames = new ArrayList<>(); | ||
|
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| try ( | ||
| final Statement statement = extractionContext.getJdbcConnection().createStatement(); | ||
| final ResultSet resultSet = statement.executeQuery( lookupSql ); | ||
| ) { | ||
| while ( resultSet.next() ) { | ||
| sequenceNames.add( resultSetSequenceName( resultSet ) ); | ||
| } | ||
| } | ||
|
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| if ( !sequenceNames.isEmpty() ) { | ||
| StringBuilder sequenceInfoQueryBuilder = new StringBuilder(); | ||
|
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| for ( String sequenceName : sequenceNames ) { | ||
| if ( sequenceInfoQueryBuilder.length() > 0 ) { | ||
| sequenceInfoQueryBuilder.append( UNION_ALL ); | ||
| } | ||
| sequenceInfoQueryBuilder.append( String.format( SQL_SEQUENCE_QUERY, sequenceName ) ); | ||
| } | ||
|
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| int index = 0; | ||
|
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| try ( | ||
| final Statement statement = extractionContext.getJdbcConnection().createStatement(); | ||
| final ResultSet resultSet = statement.executeQuery( sequenceInfoQueryBuilder.toString() ); | ||
| ) { | ||
|
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| while ( resultSet.next() ) { | ||
|
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| SequenceInformation sequenceInformation = new SequenceInformationImpl( | ||
| new QualifiedSequenceName( | ||
| null, | ||
| null, | ||
| identifierHelper.toIdentifier( | ||
| resultSetSequenceName(resultSet) | ||
| ) | ||
| ), | ||
| resultSetStartValueSize(resultSet), | ||
| resultSetMinValue(resultSet), | ||
| resultSetMaxValue(resultSet), | ||
| resultSetIncrementValue(resultSet) | ||
| ); | ||
|
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| sequenceInformationList.add(sequenceInformation); | ||
| } | ||
|
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| } | ||
| } | ||
|
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| return sequenceInformationList; | ||
| } | ||
|
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| protected String resultSetSequenceName(ResultSet resultSet) throws SQLException { | ||
| return resultSet.getString(1); | ||
| } | ||
|
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| @Override | ||
| protected String sequenceCatalogColumn() { | ||
| return null; | ||
| } | ||
|
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| @Override | ||
| protected String sequenceSchemaColumn() { | ||
| return null; | ||
| } | ||
|
|
||
| } |
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