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HHH-14230 Fix generics to avoid ClassCastException

This commit is contained in:
Yanming Zhou 2020-09-25 11:58:17 +08:00 committed by Sanne Grinovero
parent 9934baf90e
commit 23fdfa4d6a
2 changed files with 109 additions and 30 deletions
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60
hibernate-core/src/main/java/org/hibernate/mapping/Table.java
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@ -39,7 +39,7 @@ import org.jboss.logging.Logger;
*
* @author Gavin King
*/
@SuppressWarnings("unchecked")
@SuppressWarnings("deprecation")
public class Table implements RelationalModel, Serializable, Exportable {
private static final Logger log = Logger.getLogger( Table.class );
@ -50,14 +50,14 @@ public class Table implements RelationalModel, Serializable, Exportable {
/**
* contains all columns, including the primary key
*/
private Map columns = new LinkedHashMap();
private Map<String, Column> columns = new LinkedHashMap<>();
private KeyValue idValue;
private PrimaryKey primaryKey;
private Map<ForeignKeyKey, ForeignKey> foreignKeys = new LinkedHashMap<ForeignKeyKey, ForeignKey>();
private Map<String, Index> indexes = new LinkedHashMap<String, Index>();
private Map<String,UniqueKey> uniqueKeys = new LinkedHashMap<String,UniqueKey>();
private Map<ForeignKeyKey, ForeignKey> foreignKeys = new LinkedHashMap<>();
private Map<String, Index> indexes = new LinkedHashMap<>();
private Map<String,UniqueKey> uniqueKeys = new LinkedHashMap<>();
private int uniqueInteger;
private List<String> checkConstraints = new ArrayList<String>();
private List<String> checkConstraints = new ArrayList<>();
private String rowId;
private String subselect;
private boolean isAbstract;
@ -246,7 +246,7 @@ public class Table implements RelationalModel, Serializable, Exportable {
}
public Column getColumn(int n) {
Iterator iter = columns.values().iterator();
Iterator<Column> iter = columns.values().iterator();
for ( int i = 0; i < n - 1; i++ ) {
iter.next();
}
@ -280,7 +280,7 @@ public class Table implements RelationalModel, Serializable, Exportable {
return columns.size();
}
public Iterator getColumnIterator() {
public Iterator<Column> getColumnIterator() {
return columns.values().iterator();
}
@ -288,7 +288,7 @@ public class Table implements RelationalModel, Serializable, Exportable {
return indexes.values().iterator();
}
public Iterator getForeignKeyIterator() {
public Iterator<ForeignKey> getForeignKeyIterator() {
return foreignKeys.values().iterator();
}
@ -410,7 +410,7 @@ public class Table implements RelationalModel, Serializable, Exportable {
}
public void validateColumns(Dialect dialect, Mapping mapping, TableMetadata tableInfo) {
Iterator iter = getColumnIterator();
Iterator<Column> iter = getColumnIterator();
while ( iter.hasNext() ) {
Column col = (Column) iter.next();
@ -438,7 +438,7 @@ public class Table implements RelationalModel, Serializable, Exportable {
}
public Iterator sqlAlterStrings(
public Iterator<String> sqlAlterStrings(
Dialect dialect,
Metadata metadata,
TableInformation tableInfo,
@ -460,8 +460,8 @@ public class Table implements RelationalModel, Serializable, Exportable {
.append( ' ' )
.append( dialect.getAddColumnString() );
Iterator iter = getColumnIterator();
List results = new ArrayList();
Iterator<Column> iter = getColumnIterator();
List<String> results = new ArrayList<>();
while ( iter.hasNext() ) {
final Column column = (Column) iter.next();
@ -538,7 +538,7 @@ public class Table implements RelationalModel, Serializable, Exportable {
pkname = ( (Column) getPrimaryKey().getColumnIterator().next() ).getQuotedName( dialect );
}
Iterator iter = getColumnIterator();
Iterator<Column> iter = getColumnIterator();
while ( iter.hasNext() ) {
Column col = (Column) iter.next();
@ -667,7 +667,7 @@ public class Table implements RelationalModel, Serializable, Exportable {
return uniqueKey;
}
public UniqueKey createUniqueKey(List keyColumns) {
public UniqueKey createUniqueKey(List<Column> keyColumns) {
String keyName = Constraint.generateName( "UK_", this, keyColumns );
UniqueKey uk = getOrCreateUniqueKey( keyName );
uk.addColumns( keyColumns.iterator() );
@ -693,16 +693,16 @@ public class Table implements RelationalModel, Serializable, Exportable {
public void createForeignKeys() {
}
public ForeignKey createForeignKey(String keyName, List keyColumns, String referencedEntityName, String keyDefinition) {
public ForeignKey createForeignKey(String keyName, List<Column> keyColumns, String referencedEntityName, String keyDefinition) {
return createForeignKey( keyName, keyColumns, referencedEntityName, keyDefinition, null );
}
public ForeignKey createForeignKey(
String keyName,
List keyColumns,
List<Column> keyColumns,
String referencedEntityName,
String keyDefinition,
List referencedColumns) {
List<Column> referencedColumns) {
final ForeignKeyKey key = new ForeignKeyKey( keyColumns, referencedEntityName, referencedColumns );
ForeignKey fk = foreignKeys.get( key );
@ -826,14 +826,14 @@ public class Table implements RelationalModel, Serializable, Exportable {
return checkConstraints.iterator();
}
public Iterator sqlCommentStrings(Dialect dialect, String defaultCatalog, String defaultSchema) {
List comments = new ArrayList();
public Iterator<String> sqlCommentStrings(Dialect dialect, String defaultCatalog, String defaultSchema) {
List<String> comments = new ArrayList<>();
if ( dialect.supportsCommentOn() ) {
String tableName = getQualifiedName( dialect, defaultCatalog, defaultSchema );
if ( comment != null ) {
comments.add( "comment on table " + tableName + " is '" + comment + "'" );
}
Iterator iter = getColumnIterator();
Iterator<Column> iter = getColumnIterator();
while ( iter.hasNext() ) {
Column column = (Column) iter.next();
String columnComment = column.getComment();
@ -861,19 +861,19 @@ public class Table implements RelationalModel, Serializable, Exportable {
public static class ForeignKeyKey implements Serializable {
String referencedClassName;
List columns;
List referencedColumns;
List<Column> columns;
List<Column> referencedColumns;
ForeignKeyKey(List columns, String referencedClassName, List referencedColumns) {
ForeignKeyKey(List<Column> columns, String referencedClassName, List<Column> referencedColumns) {
this.referencedClassName = referencedClassName;
this.columns = new ArrayList();
this.columns = new ArrayList<>();
this.columns.addAll( columns );
if ( referencedColumns != null ) {
this.referencedColumns = new ArrayList();
this.referencedColumns = new ArrayList<>();
this.referencedColumns.addAll( referencedColumns );
}
else {
this.referencedColumns = Collections.EMPTY_LIST;
this.referencedColumns = Collections.emptyList();
}
}
@ -889,16 +889,16 @@ public class Table implements RelationalModel, Serializable, Exportable {
@Override
public String toString() {
return "ForeignKeyKey{" +
"columns=" + String.join( ",", columns ) +
"columns=" + columns +
", referencedClassName='" + referencedClassName + '\'' +
", referencedColumns=" + String.join( ",", referencedColumns ) +
", referencedColumns=" + referencedColumns +
'}';
}
}
public void addInitCommand(InitCommand command) {
if ( initCommands == null ) {
initCommands = new ArrayList<InitCommand>();
initCommands = new ArrayList<>();
}
initCommands.add( command );
}

79
hibernate-core/src/test/java/org/hibernate/test/foreignkeys/HHH14230.java Normal file
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@ -0,0 +1,79 @@
/*
* 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.foreignkeys;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import java.util.stream.StreamSupport;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import org.hibernate.boot.Metadata;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.mapping.Table;
import org.hibernate.testing.TestForIssue;
import org.junit.Test;
/**
* @author Yanming Zhou
*/
@TestForIssue(jiraKey = "HHH-14230")
public class HHH14230 {
private static final String TABLE_NAME = "test_entity";
private static final String JOIN_COLUMN_NAME = "parent";
@Test
public void test() {
Metadata metadata = new MetadataSources(new StandardServiceRegistryBuilder().build())
.addAnnotatedClass(TestEntity.class).buildMetadata();
Table table = StreamSupport.stream(metadata.getDatabase().getNamespaces().spliterator(), false)
.flatMap(namespace -> namespace.getTables().stream())
.filter(t -> t.getName().equals(TABLE_NAME)).findFirst().orElse(null);
assertNotNull(table);
assertEquals(1, table.getForeignKeys().size());
// ClassCastException before HHH-14230
assertTrue(table.getForeignKeys().keySet().iterator().next().toString().contains(JOIN_COLUMN_NAME));
}
@Entity
@javax.persistence.Table(name = TABLE_NAME)
public static class TestEntity {
@Id
private Long id;
@ManyToOne
@JoinColumn(name = JOIN_COLUMN_NAME)
private TestEntity parent;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public TestEntity getParent() {
return parent;
}
public void setParent(TestEntity parent) {
this.parent = parent;
}
}
}