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org.hibernate.mapping.Table Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2010, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.mapping;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.hibernate.HibernateException;
import org.hibernate.MappingException;
import org.hibernate.dialect.Dialect;
import org.hibernate.engine.spi.Mapping;
import org.hibernate.tool.hbm2ddl.ColumnMetadata;
import org.hibernate.tool.hbm2ddl.TableMetadata;
/**
* A relational table
*
* @author Gavin King
*/
public class Table implements RelationalModel, Serializable {
private String name;
private String schema;
private String catalog;
/**
* contains all columns, including the primary key
*/
private Map columns = new LinkedHashMap();
private KeyValue idValue;
private PrimaryKey primaryKey;
private Map indexes = new LinkedHashMap();
private Map foreignKeys = new LinkedHashMap();
private Map uniqueKeys = new LinkedHashMap();
private int uniqueInteger;
private boolean quoted;
private boolean schemaQuoted;
private boolean catalogQuoted;
private List checkConstraints = new ArrayList();
private String rowId;
private String subselect;
private boolean isAbstract;
private boolean hasDenormalizedTables;
private String comment;
static class ForeignKeyKey implements Serializable {
String referencedClassName;
List columns;
List referencedColumns;
ForeignKeyKey(List columns, String referencedClassName, List referencedColumns) {
this.referencedClassName = referencedClassName;
this.columns = new ArrayList();
this.columns.addAll( columns );
if ( referencedColumns != null ) {
this.referencedColumns = new ArrayList();
this.referencedColumns.addAll( referencedColumns );
}
else {
this.referencedColumns = Collections.EMPTY_LIST;
}
}
public int hashCode() {
return columns.hashCode() + referencedColumns.hashCode();
}
public boolean equals(Object other) {
ForeignKeyKey fkk = (ForeignKeyKey) other;
return fkk.columns.equals( columns ) &&
fkk.referencedClassName.equals( referencedClassName ) && fkk.referencedColumns
.equals( referencedColumns );
}
}
public Table() { }
public Table(String name) {
this();
setName( name );
}
public String getQualifiedName(Dialect dialect, String defaultCatalog, String defaultSchema) {
if ( subselect != null ) {
return "( " + subselect + " )";
}
String quotedName = getQuotedName( dialect );
String usedSchema = schema == null ?
defaultSchema :
getQuotedSchema( dialect );
String usedCatalog = catalog == null ?
defaultCatalog :
getQuotedCatalog( dialect );
return qualify( usedCatalog, usedSchema, quotedName );
}
public static String qualify(String catalog, String schema, String table) {
StringBuilder qualifiedName = new StringBuilder();
if ( catalog != null ) {
qualifiedName.append( catalog ).append( '.' );
}
if ( schema != null ) {
qualifiedName.append( schema ).append( '.' );
}
return qualifiedName.append( table ).toString();
}
public String getName() {
return name;
}
/**
* returns quoted name as it would be in the mapping file.
*/
public String getQuotedName() {
return quoted ?
"`" + name + "`" :
name;
}
public String getQuotedName(Dialect dialect) {
return quoted ?
dialect.openQuote() + name + dialect.closeQuote() :
name;
}
/**
* returns quoted name as it is in the mapping file.
*/
public String getQuotedSchema() {
return schemaQuoted ?
"`" + schema + "`" :
schema;
}
public String getQuotedSchema(Dialect dialect) {
return schemaQuoted ?
dialect.openQuote() + schema + dialect.closeQuote() :
schema;
}
public String getQuotedCatalog() {
return catalogQuoted ?
"`" + catalog + "`" :
catalog;
}
public String getQuotedCatalog(Dialect dialect) {
return catalogQuoted ?
dialect.openQuote() + catalog + dialect.closeQuote() :
catalog;
}
public void setName(String name) {
if ( name.charAt( 0 ) == '`' ) {
quoted = true;
this.name = name.substring( 1, name.length() - 1 );
}
else {
this.name = name;
}
}
/**
* Return the column which is identified by column provided as argument.
*
* @param column column with atleast a name.
* @return the underlying column or null if not inside this table. Note: the instance *can* be different than the input parameter, but the name will be the same.
*/
public Column getColumn(Column column) {
if ( column == null ) {
return null;
}
Column myColumn = (Column) columns.get( column.getCanonicalName() );
return column.equals( myColumn ) ?
myColumn :
null;
}
public Column getColumn(int n) {
Iterator iter = columns.values().iterator();
for ( int i = 0; i < n - 1; i++ ) {
iter.next();
}
return (Column) iter.next();
}
public void addColumn(Column column) {
Column old = getColumn( column );
if ( old == null ) {
columns.put( column.getCanonicalName(), column );
column.uniqueInteger = columns.size();
}
else {
column.uniqueInteger = old.uniqueInteger;
}
}
public int getColumnSpan() {
return columns.size();
}
public Iterator getColumnIterator() {
return columns.values().iterator();
}
public Iterator getIndexIterator() {
return indexes.values().iterator();
}
public Iterator getForeignKeyIterator() {
return foreignKeys.values().iterator();
}
public Iterator getUniqueKeyIterator() {
return getUniqueKeys().values().iterator();
}
Map getUniqueKeys() {
cleanseUniqueKeyMapIfNeeded();
return uniqueKeys;
}
private int sizeOfUniqueKeyMapOnLastCleanse;
private void cleanseUniqueKeyMapIfNeeded() {
if ( uniqueKeys.size() == sizeOfUniqueKeyMapOnLastCleanse ) {
// nothing to do
return;
}
cleanseUniqueKeyMap();
sizeOfUniqueKeyMapOnLastCleanse = uniqueKeys.size();
}
private void cleanseUniqueKeyMap() {
// We need to account for a few conditions here...
// 1) If there are multiple unique keys contained in the uniqueKeys Map, we need to deduplicate
// any sharing the same columns as other defined unique keys; this is needed for the annotation
// processor since it creates unique constraints automagically for the user
// 2) Remove any unique keys that share the same columns as the primary key; again, this is
// needed for the annotation processor to handle @Id @OneToOne cases. In such cases the
// unique key is unnecessary because a primary key is already unique by definition. We handle
// this case specifically because some databases fail if you try to apply a unique key to
// the primary key columns which causes schema export to fail in these cases.
if ( uniqueKeys.isEmpty() ) {
// nothing to do
return;
}
else if ( uniqueKeys.size() == 1 ) {
// we have to worry about condition 2 above, but not condition 1
final Map.Entry uniqueKeyEntry = uniqueKeys.entrySet().iterator().next();
if ( isSameAsPrimaryKeyColumns( uniqueKeyEntry.getValue() ) ) {
uniqueKeys.remove( uniqueKeyEntry.getKey() );
}
}
else {
// we have to check both conditions 1 and 2
final Iterator> uniqueKeyEntries = uniqueKeys.entrySet().iterator();
while ( uniqueKeyEntries.hasNext() ) {
final Map.Entry uniqueKeyEntry = uniqueKeyEntries.next();
final UniqueKey uniqueKey = uniqueKeyEntry.getValue();
boolean removeIt = false;
// condition 1 : check against other unique keys
for ( UniqueKey otherUniqueKey : uniqueKeys.values() ) {
// make sure its not the same unique key
if ( uniqueKeyEntry.getValue() == otherUniqueKey ) {
continue;
}
if ( otherUniqueKey.getColumns().containsAll( uniqueKey.getColumns() )
&& uniqueKey.getColumns().containsAll( otherUniqueKey.getColumns() ) ) {
removeIt = true;
break;
}
}
// condition 2 : check against pk
if ( isSameAsPrimaryKeyColumns( uniqueKeyEntry.getValue() ) ) {
removeIt = true;
}
if ( removeIt ) {
//uniqueKeys.remove( uniqueKeyEntry.getKey() );
uniqueKeyEntries.remove();
}
}
}
}
private boolean isSameAsPrimaryKeyColumns(UniqueKey uniqueKey) {
if ( primaryKey == null || ! primaryKey.columnIterator().hasNext() ) {
// happens for many-to-many tables
return false;
}
return primaryKey.getColumns().containsAll( uniqueKey.getColumns() )
&& uniqueKey.getColumns().containsAll( primaryKey.getColumns() );
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result
+ ((catalog == null) ? 0 : isCatalogQuoted() ? catalog.hashCode() : catalog.toLowerCase().hashCode());
result = prime * result + ((name == null) ? 0 : isQuoted() ? name.hashCode() : name.toLowerCase().hashCode());
result = prime * result
+ ((schema == null) ? 0 : isSchemaQuoted() ? schema.hashCode() : schema.toLowerCase().hashCode());
return result;
}
@Override
public boolean equals(Object object) {
return object instanceof Table && equals((Table) object);
}
public boolean equals(Table table) {
if (null == table) {
return false;
}
if (this == table) {
return true;
}
return isQuoted() ? name.equals(table.getName()) : name.equalsIgnoreCase(table.getName())
&& ((schema == null && table.getSchema() != null) ? false : (schema == null) ? true : isSchemaQuoted() ? schema.equals(table.getSchema()) : schema.equalsIgnoreCase(table.getSchema()))
&& ((catalog == null && table.getCatalog() != null) ? false : (catalog == null) ? true : isCatalogQuoted() ? catalog.equals(table.getCatalog()) : catalog.equalsIgnoreCase(table.getCatalog()));
}
public void validateColumns(Dialect dialect, Mapping mapping, TableMetadata tableInfo) {
Iterator iter = getColumnIterator();
while ( iter.hasNext() ) {
Column col = (Column) iter.next();
ColumnMetadata columnInfo = tableInfo.getColumnMetadata( col.getName() );
if ( columnInfo == null ) {
throw new HibernateException( "Missing column: " + col.getName() + " in " + Table.qualify( tableInfo.getCatalog(), tableInfo.getSchema(), tableInfo.getName()));
}
else {
final boolean typesMatch = col.getSqlType( dialect, mapping ).toLowerCase()
.startsWith( columnInfo.getTypeName().toLowerCase() )
|| columnInfo.getTypeCode() == col.getSqlTypeCode( mapping );
if ( !typesMatch ) {
throw new HibernateException(
"Wrong column type in " +
Table.qualify( tableInfo.getCatalog(), tableInfo.getSchema(), tableInfo.getName()) +
" for column " + col.getName() +
". Found: " + columnInfo.getTypeName().toLowerCase() +
", expected: " + col.getSqlType( dialect, mapping )
);
}
}
}
}
public Iterator sqlAlterStrings(Dialect dialect, Mapping p, TableMetadata tableInfo, String defaultCatalog,
String defaultSchema)
throws HibernateException {
StringBuilder root = new StringBuilder( "alter table " )
.append( getQualifiedName( dialect, defaultCatalog, defaultSchema ) )
.append( ' ' )
.append( dialect.getAddColumnString() );
Iterator iter = getColumnIterator();
List results = new ArrayList();
while ( iter.hasNext() ) {
Column column = (Column) iter.next();
ColumnMetadata columnInfo = tableInfo.getColumnMetadata( column.getName() );
if ( columnInfo == null ) {
// the column doesnt exist at all.
StringBuilder alter = new StringBuilder( root.toString() )
.append( ' ' )
.append( column.getQuotedName( dialect ) )
.append( ' ' )
.append( column.getSqlType( dialect, p ) );
String defaultValue = column.getDefaultValue();
if ( defaultValue != null ) {
alter.append( " default " ).append( defaultValue );
}
if ( column.isNullable() ) {
alter.append( dialect.getNullColumnString() );
}
else {
alter.append( " not null" );
}
if ( column.isUnique() ) {
String keyName = Constraint.generateName( "UK_", this, column );
UniqueKey uk = getOrCreateUniqueKey( keyName );
uk.addColumn( column );
alter.append( dialect.getUniqueDelegate()
.getColumnDefinitionUniquenessFragment( column ) );
}
if ( column.hasCheckConstraint() && dialect.supportsColumnCheck() ) {
alter.append( " check(" )
.append( column.getCheckConstraint() )
.append( ")" );
}
String columnComment = column.getComment();
if ( columnComment != null ) {
alter.append( dialect.getColumnComment( columnComment ) );
}
alter.append( dialect.getAddColumnSuffixString() );
results.add( alter.toString() );
}
}
return results.iterator();
}
public boolean hasPrimaryKey() {
return getPrimaryKey() != null;
}
public String sqlTemporaryTableCreateString(Dialect dialect, Mapping mapping) throws HibernateException {
StringBuilder buffer = new StringBuilder( dialect.getCreateTemporaryTableString() )
.append( ' ' )
.append( name )
.append( " (" );
Iterator itr = getColumnIterator();
while ( itr.hasNext() ) {
final Column column = (Column) itr.next();
buffer.append( column.getQuotedName( dialect ) ).append( ' ' );
buffer.append( column.getSqlType( dialect, mapping ) );
if ( column.isNullable() ) {
buffer.append( dialect.getNullColumnString() );
}
else {
buffer.append( " not null" );
}
if ( itr.hasNext() ) {
buffer.append( ", " );
}
}
buffer.append( ") " );
buffer.append( dialect.getCreateTemporaryTablePostfix() );
return buffer.toString();
}
public String sqlCreateString(Dialect dialect, Mapping p, String defaultCatalog, String defaultSchema) {
StringBuilder buf = new StringBuilder( hasPrimaryKey() ? dialect.getCreateTableString() : dialect.getCreateMultisetTableString() )
.append( ' ' )
.append( getQualifiedName( dialect, defaultCatalog, defaultSchema ) )
.append( " (" );
boolean identityColumn = idValue != null && idValue.isIdentityColumn( p.getIdentifierGeneratorFactory(), dialect );
// Try to find out the name of the primary key to create it as identity if the IdentityGenerator is used
String pkname = null;
if ( hasPrimaryKey() && identityColumn ) {
pkname = ( (Column) getPrimaryKey().getColumnIterator().next() ).getQuotedName( dialect );
}
Iterator iter = getColumnIterator();
while ( iter.hasNext() ) {
Column col = (Column) iter.next();
buf.append( col.getQuotedName( dialect ) )
.append( ' ' );
if ( identityColumn && col.getQuotedName( dialect ).equals( pkname ) ) {
// to support dialects that have their own identity data type
if ( dialect.hasDataTypeInIdentityColumn() ) {
buf.append( col.getSqlType( dialect, p ) );
}
buf.append( ' ' )
.append( dialect.getIdentityColumnString( col.getSqlTypeCode( p ) ) );
}
else {
buf.append( col.getSqlType( dialect, p ) );
String defaultValue = col.getDefaultValue();
if ( defaultValue != null ) {
buf.append( " default " ).append( defaultValue );
}
if ( col.isNullable() ) {
buf.append( dialect.getNullColumnString() );
}
else {
buf.append( " not null" );
}
}
if ( col.isUnique() ) {
String keyName = Constraint.generateName( "UK_", this, col );
UniqueKey uk = getOrCreateUniqueKey( keyName );
uk.addColumn( col );
buf.append( dialect.getUniqueDelegate()
.getColumnDefinitionUniquenessFragment( col ) );
}
if ( col.hasCheckConstraint() && dialect.supportsColumnCheck() ) {
buf.append( " check (" )
.append( col.getCheckConstraint() )
.append( ")" );
}
String columnComment = col.getComment();
if ( columnComment != null ) {
buf.append( dialect.getColumnComment( columnComment ) );
}
if ( iter.hasNext() ) {
buf.append( ", " );
}
}
if ( hasPrimaryKey() ) {
buf.append( ", " )
.append( getPrimaryKey().sqlConstraintString( dialect ) );
}
buf.append( dialect.getUniqueDelegate().getTableCreationUniqueConstraintsFragment( this ) );
if ( dialect.supportsTableCheck() ) {
Iterator chiter = checkConstraints.iterator();
while ( chiter.hasNext() ) {
buf.append( ", check (" )
.append( chiter.next() )
.append( ')' );
}
}
buf.append( ')' );
if ( comment != null ) {
buf.append( dialect.getTableComment( comment ) );
}
return buf.append( dialect.getTableTypeString() ).toString();
}
public String sqlDropString(Dialect dialect, String defaultCatalog, String defaultSchema) {
return dialect.getDropTableString( getQualifiedName( dialect, defaultCatalog, defaultSchema ) );
}
public PrimaryKey getPrimaryKey() {
return primaryKey;
}
public void setPrimaryKey(PrimaryKey primaryKey) {
this.primaryKey = primaryKey;
}
public Index getOrCreateIndex(String indexName) {
Index index = indexes.get( indexName );
if ( index == null ) {
index = new Index();
index.setName( indexName );
index.setTable( this );
indexes.put( indexName, index );
}
return index;
}
public Index getIndex(String indexName) {
return indexes.get( indexName );
}
public Index addIndex(Index index) {
Index current = indexes.get( index.getName() );
if ( current != null ) {
throw new MappingException( "Index " + index.getName() + " already exists!" );
}
indexes.put( index.getName(), index );
return index;
}
public UniqueKey addUniqueKey(UniqueKey uniqueKey) {
UniqueKey current = uniqueKeys.get( uniqueKey.getName() );
if ( current != null ) {
throw new MappingException( "UniqueKey " + uniqueKey.getName() + " already exists!" );
}
uniqueKeys.put( uniqueKey.getName(), uniqueKey );
return uniqueKey;
}
public UniqueKey createUniqueKey(List keyColumns) {
String keyName = Constraint.generateName( "UK_", this, keyColumns );
UniqueKey uk = getOrCreateUniqueKey( keyName );
uk.addColumns( keyColumns.iterator() );
return uk;
}
public UniqueKey getUniqueKey(String keyName) {
return uniqueKeys.get( keyName );
}
public UniqueKey getOrCreateUniqueKey(String keyName) {
UniqueKey uk = uniqueKeys.get( keyName );
if ( uk == null ) {
uk = new UniqueKey();
uk.setName( keyName );
uk.setTable( this );
uniqueKeys.put( keyName, uk );
}
return uk;
}
public void createForeignKeys() {
}
public ForeignKey createForeignKey(String keyName, List keyColumns, String referencedEntityName) {
return createForeignKey( keyName, keyColumns, referencedEntityName, null );
}
public ForeignKey createForeignKey(String keyName, List keyColumns, String referencedEntityName,
List referencedColumns) {
Object key = new ForeignKeyKey( keyColumns, referencedEntityName, referencedColumns );
ForeignKey fk = (ForeignKey) foreignKeys.get( key );
if ( fk == null ) {
fk = new ForeignKey();
fk.setTable( this );
fk.setReferencedEntityName( referencedEntityName );
fk.addColumns( keyColumns.iterator() );
if ( referencedColumns != null ) {
fk.addReferencedColumns( referencedColumns.iterator() );
}
if ( keyName != null ) {
fk.setName( keyName );
}
else {
fk.setName( Constraint.generateName( fk.generatedConstraintNamePrefix(),
this, keyColumns ) );
}
foreignKeys.put( key, fk );
}
if ( keyName != null ) {
fk.setName( keyName );
}
return fk;
}
public String getSchema() {
return schema;
}
public void setSchema(String schema) {
if ( schema != null && schema.charAt( 0 ) == '`' ) {
schemaQuoted = true;
this.schema = schema.substring( 1, schema.length() - 1 );
}
else {
this.schema = schema;
}
}
public String getCatalog() {
return catalog;
}
public void setCatalog(String catalog) {
if ( catalog != null && catalog.charAt( 0 ) == '`' ) {
catalogQuoted = true;
this.catalog = catalog.substring( 1, catalog.length() - 1 );
}
else {
this.catalog = catalog;
}
}
// This must be done outside of Table, rather than statically, to ensure
// deterministic alias names. See HHH-2448.
public void setUniqueInteger( int uniqueInteger ) {
this.uniqueInteger = uniqueInteger;
}
public int getUniqueInteger() {
return uniqueInteger;
}
public void setIdentifierValue(KeyValue idValue) {
this.idValue = idValue;
}
public KeyValue getIdentifierValue() {
return idValue;
}
public boolean isSchemaQuoted() {
return schemaQuoted;
}
public boolean isCatalogQuoted() {
return catalogQuoted;
}
public boolean isQuoted() {
return quoted;
}
public void setQuoted(boolean quoted) {
this.quoted = quoted;
}
public void addCheckConstraint(String constraint) {
checkConstraints.add( constraint );
}
public boolean containsColumn(Column column) {
return columns.containsValue( column );
}
public String getRowId() {
return rowId;
}
public void setRowId(String rowId) {
this.rowId = rowId;
}
public String toString() {
StringBuilder buf = new StringBuilder().append( getClass().getName() )
.append( '(' );
if ( getCatalog() != null ) {
buf.append( getCatalog() + "." );
}
if ( getSchema() != null ) {
buf.append( getSchema() + "." );
}
buf.append( getName() ).append( ')' );
return buf.toString();
}
public String getSubselect() {
return subselect;
}
public void setSubselect(String subselect) {
this.subselect = subselect;
}
public boolean isSubselect() {
return subselect != null;
}
public boolean isAbstractUnionTable() {
return hasDenormalizedTables() && isAbstract;
}
public boolean hasDenormalizedTables() {
return hasDenormalizedTables;
}
void setHasDenormalizedTables() {
hasDenormalizedTables = true;
}
public void setAbstract(boolean isAbstract) {
this.isAbstract = isAbstract;
}
public boolean isAbstract() {
return isAbstract;
}
public boolean isPhysicalTable() {
return !isSubselect() && !isAbstractUnionTable();
}
public String getComment() {
return comment;
}
public void setComment(String comment) {
this.comment = comment;
}
public Iterator getCheckConstraintsIterator() {
return checkConstraints.iterator();
}
public Iterator sqlCommentStrings(Dialect dialect, String defaultCatalog, String defaultSchema) {
List comments = new ArrayList();
if ( dialect.supportsCommentOn() ) {
String tableName = getQualifiedName( dialect, defaultCatalog, defaultSchema );
if ( comment != null ) {
StringBuilder buf = new StringBuilder()
.append( "comment on table " )
.append( tableName )
.append( " is '" )
.append( comment )
.append( "'" );
comments.add( buf.toString() );
}
Iterator iter = getColumnIterator();
while ( iter.hasNext() ) {
Column column = (Column) iter.next();
String columnComment = column.getComment();
if ( columnComment != null ) {
StringBuilder buf = new StringBuilder()
.append( "comment on column " )
.append( tableName )
.append( '.' )
.append( column.getQuotedName( dialect ) )
.append( " is '" )
.append( columnComment )
.append( "'" );
comments.add( buf.toString() );
}
}
}
return comments.iterator();
}
}
