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HHH-12896 Minor memory improvements in HQLQueryPlan

This commit is contained in:
Guillaume Smet 2018-08-08 16:22:18 +02:00 committed by Sanne Grinovero
parent fa5f592fb9
commit ea859736c2
2 changed files with 22 additions and 13 deletions
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26
hibernate-core/src/main/java/org/hibernate/engine/query/spi/HQLQueryPlan.java
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@ -48,11 +48,10 @@ import org.hibernate.type.Type;
public class HQLQueryPlan implements Serializable { public class HQLQueryPlan implements Serializable {
private static final CoreMessageLogger LOG = CoreLogging.messageLogger( HQLQueryPlan.class ); private static final CoreMessageLogger LOG = CoreLogging.messageLogger( HQLQueryPlan.class );
// TODO : keep separate notions of QT[] here for shallow/non-shallow queries... // TODO : keep separate notions of QT[] here for shallow/non-shallow queries...
private final String sourceQuery; private final String sourceQuery;
private final QueryTranslator[] translators; private final QueryTranslator[] translators;
private final String[] sqlStrings;
private final ParameterMetadataImpl parameterMetadata; private final ParameterMetadataImpl parameterMetadata;
private final ReturnMetadata returnMetadata; private final ReturnMetadata returnMetadata;
@ -60,7 +59,6 @@ public class HQLQueryPlan implements Serializable {
private final Set<String> enabledFilterNames; private final Set<String> enabledFilterNames;
private final boolean shallow; private final boolean shallow;
private final SessionFactoryImplementor factory;
/** /**
* We'll check the trace level only once per instance * We'll check the trace level only once per instance
@ -95,17 +93,18 @@ public class HQLQueryPlan implements Serializable {
EntityGraphQueryHint entityGraphQueryHint) { EntityGraphQueryHint entityGraphQueryHint) {
this.sourceQuery = hql; this.sourceQuery = hql;
this.shallow = shallow; this.shallow = shallow;
this.factory = factory;
final Set<String> copy = new HashSet<>(); if ( enabledFilters.isEmpty() ) {
copy.addAll( enabledFilters.keySet() ); this.enabledFilterNames = Collections.emptySet();
this.enabledFilterNames = java.util.Collections.unmodifiableSet( copy ); }
else {
this.enabledFilterNames = Collections.unmodifiableSet( new HashSet<>( enabledFilters.keySet() ) );
}
final String[] concreteQueryStrings = QuerySplitter.concreteQueries( hql, factory ); final String[] concreteQueryStrings = QuerySplitter.concreteQueries( hql, factory );
final int length = concreteQueryStrings.length; final int length = concreteQueryStrings.length;
this.translators = new QueryTranslator[length]; this.translators = new QueryTranslator[length];
final List<String> sqlStringList = new ArrayList<>();
final Set<Serializable> combinedQuerySpaces = new HashSet<>(); final Set<Serializable> combinedQuerySpaces = new HashSet<>();
final Map querySubstitutions = factory.getSessionFactoryOptions().getQuerySubstitutions(); final Map querySubstitutions = factory.getSessionFactoryOptions().getQuerySubstitutions();
@ -124,10 +123,8 @@ public class HQLQueryPlan implements Serializable {
( (FilterTranslator) translators[i] ).compile( collectionRole, querySubstitutions, shallow ); ( (FilterTranslator) translators[i] ).compile( collectionRole, querySubstitutions, shallow );
} }
combinedQuerySpaces.addAll( translators[i].getQuerySpaces() ); combinedQuerySpaces.addAll( translators[i].getQuerySpaces() );
sqlStringList.addAll( translators[i].collectSqlStrings() );
} }
this.sqlStrings = ArrayHelper.toStringArray( sqlStringList );
this.querySpaces = combinedQuerySpaces; this.querySpaces = combinedQuerySpaces;
if ( length == 0 ) { if ( length == 0 ) {
@ -166,8 +163,15 @@ public class HQLQueryPlan implements Serializable {
return enabledFilterNames; return enabledFilterNames;
} }
/**
* This method should only be called for debugging purposes as it regenerates a new array every time.
*/
public String[] getSqlStrings() { public String[] getSqlStrings() {
return sqlStrings; List<String> sqlStrings = new ArrayList<>();
for ( int i = 0; i < translators.length; i++ ) {
sqlStrings.addAll( translators[i].collectSqlStrings() );
}
return ArrayHelper.toStringArray( sqlStrings );
} }
public Set getUtilizedFilterNames() { public Set getUtilizedFilterNames() {

7
hibernate-core/src/main/java/org/hibernate/hql/internal/classic/QueryTranslatorImpl.java
View File

@ -268,10 +268,12 @@ public class QueryTranslatorImpl extends BasicLoader implements FilterTranslator
return sqlString; return sqlString;
} }
@Override
public List<String> collectSqlStrings() { public List<String> collectSqlStrings() {
return ArrayHelper.toList( new String[] {sqlString} ); return Collections.singletonList( sqlString );
} }
@Override
public String getQueryString() { public String getQueryString() {
return queryString; return queryString;
} }
@ -291,15 +293,18 @@ public class QueryTranslatorImpl extends BasicLoader implements FilterTranslator
* *
* @return an array of <tt>Type</tt>s. * @return an array of <tt>Type</tt>s.
*/ */
@Override
public Type[] getReturnTypes() { public Type[] getReturnTypes() {
return actualReturnTypes; return actualReturnTypes;
} }
@Override
public String[] getReturnAliases() { public String[] getReturnAliases() {
// return aliases not supported in classic translator! // return aliases not supported in classic translator!
return NO_RETURN_ALIASES; return NO_RETURN_ALIASES;
} }
@Override
public String[][] getColumnNames() { public String[][] getColumnNames() {
return scalarColumnNames; return scalarColumnNames;
} }