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HHH-14236 Improve efficiency of ForeignKeyKey

This commit is contained in:
Sanne Grinovero 2020-09-28 14:41:07 +01:00
parent cddb67f103
commit d16799c2a4
1 changed files with 16 additions and 15 deletions
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31
hibernate-core/src/main/java/org/hibernate/mapping/Table.java
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@ -8,12 +8,14 @@ package org.hibernate.mapping;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Objects;
import org.hibernate.HibernateException;
import org.hibernate.MappingException;
@ -42,6 +44,7 @@ import org.jboss.logging.Logger;
@SuppressWarnings("deprecation")
public class Table implements RelationalModel, Serializable, Exportable {
private static final Logger log = Logger.getLogger( Table.class );
private static final Column[] EMPTY_COLUMN_ARRAY = new Column[0];
private Identifier catalog;
private Identifier schema;
@ -858,40 +861,38 @@ public class Table implements RelationalModel, Serializable, Exportable {
return identifier == null ? null : identifier.render();
}
public static class ForeignKeyKey implements Serializable {
String referencedClassName;
List<Column> columns;
List<Column> referencedColumns;
private final String referencedClassName;
private final Column[] columns;
private final Column[] referencedColumns;
ForeignKeyKey(List<Column> columns, String referencedClassName, List<Column> referencedColumns) {
Objects.requireNonNull( columns );
Objects.requireNonNull( referencedClassName );
this.referencedClassName = referencedClassName;
this.columns = new ArrayList<>();
this.columns.addAll( columns );
this.columns = columns.toArray( EMPTY_COLUMN_ARRAY );
if ( referencedColumns != null ) {
this.referencedColumns = new ArrayList<>();
this.referencedColumns.addAll( referencedColumns );
this.referencedColumns = referencedColumns.toArray( EMPTY_COLUMN_ARRAY );
}
else {
this.referencedColumns = Collections.emptyList();
this.referencedColumns = EMPTY_COLUMN_ARRAY;
}
}
public int hashCode() {
return columns.hashCode() + referencedColumns.hashCode();
return Arrays.hashCode( columns ) + Arrays.hashCode( referencedColumns );
}
public boolean equals(Object other) {
ForeignKeyKey fkk = (ForeignKeyKey) other;
return fkk != null && fkk.columns.equals( columns ) && fkk.referencedColumns.equals( referencedColumns );
return fkk != null && Arrays.equals( fkk.columns, columns ) && Arrays.equals( fkk.referencedColumns, referencedColumns );
}
@Override
public String toString() {
return "ForeignKeyKey{" +
"columns=" + columns +
", referencedClassName='" + referencedClassName + '\'' +
", referencedColumns=" + referencedColumns +
return "ForeignKeyKey{columns=" + Arrays.toString( columns ) +
", referencedClassName='" + referencedClassName +
"', referencedColumns=" + Arrays.toString( referencedColumns ) +
'}';
}
}