//$Id: Table.java 11322 2007-03-20 12:06:37Z [email protected] $
package org.hibernate.mapping;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.apache.commons.collections.SequencedHashMap;
import org.hibernate.HibernateException;
import org.hibernate.MappingException;
import org.hibernate.dialect.Dialect;
import org.hibernate.engine.Mapping;
import org.hibernate.tool.hbm2ddl.ColumnMetadata;
import org.hibernate.tool.hbm2ddl.TableMetadata;
import org.hibernate.util.CollectionHelper;
/**
* 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 SequencedHashMap();
private KeyValue idValue;
private PrimaryKey primaryKey;
private Map indexes = new HashMap();
private Map foreignKeys = new HashMap();
private Map uniqueKeys = new HashMap();
private final int uniqueInteger;
private boolean quoted;
private boolean schemaQuoted;
private static int tableCounter = 0;
private List checkConstraints = new ArrayList();
private String rowId;
private String subselect;
private boolean isAbstract;
private boolean hasDenormalizedTables = false;
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 = CollectionHelper.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() {
uniqueInteger = tableCounter++;
}
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 :
catalog;
return qualify( usedCatalog, usedSchema, quotedName );
}
public static String qualify(String catalog, String schema, String table) {
StringBuffer qualifiedName = new StringBuffer();
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 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 = (Column) 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() {
if ( uniqueKeys.size() > 1 ) {
//deduplicate unique constraints sharing the same columns
//this is needed by Hibernate Annotations since it creates automagically
// unique constraints for the user
Iterator it = uniqueKeys.entrySet().iterator();
Map finalUniqueKeys = new HashMap( uniqueKeys.size() );
while ( it.hasNext() ) {
Map.Entry entry = (Map.Entry) it.next();
UniqueKey uk = (UniqueKey) entry.getValue();
List columns = uk.getColumns();
int size = finalUniqueKeys.size();
boolean skip = false;
Iterator tempUks = finalUniqueKeys.entrySet().iterator();
while ( tempUks.hasNext() ) {
final UniqueKey currentUk = (UniqueKey) ( (Map.Entry) tempUks.next() ).getValue();
if ( currentUk.getColumns().containsAll( columns ) && columns
.containsAll( currentUk.getColumns() ) ) {
skip = true;
break;
}
}
if ( !skip ) finalUniqueKeys.put( entry.getKey(), uk );
}
return finalUniqueKeys;
}
else {
return uniqueKeys;
}
}
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 )
.startsWith( columnInfo.getTypeName().toLowerCase() )
|| columnInfo.getTypeCode() == col.getSqlTypeCode( mapping );
if ( !typesMatch ) {
throw new HibernateException(
"Wrong column type: " + col.getName() +
", expected: " + col.getSqlType( dialect, mapping )
);
}
}
}
}
public Iterator sqlAlterStrings(Dialect dialect, Mapping p, TableMetadata tableInfo, String defaultCatalog,
String defaultSchema)
throws HibernateException {
StringBuffer root = new StringBuffer( "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.
StringBuffer alter = new StringBuffer( 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" );
}
}
boolean useUniqueConstraint = column.isUnique() &&
dialect.supportsUnique() &&
( !column.isNullable() || dialect.supportsNotNullUnique() );
if ( useUniqueConstraint ) {
alter.append( " unique" );
}
if ( column.hasCheckConstraint() && dialect.supportsColumnCheck() ) {
alter.append( " check(" )
.append( column.getCheckConstraint() )
.append( ")" );
}
String columnComment = column.getComment();
if ( columnComment != null ) {
alter.append( dialect.getColumnComment( columnComment ) );
}
results.add( alter.toString() );
}
}
return results.iterator();
}
public boolean hasPrimaryKey() {
return getPrimaryKey() != null;
}
public String sqlTemporaryTableCreateString(Dialect dialect, Mapping mapping) throws HibernateException {
StringBuffer buffer = new StringBuffer( 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) {
StringBuffer buf = new StringBuffer( hasPrimaryKey() ? dialect.getCreateTableString() : dialect.getCreateMultisetTableString() )
.append( ' ' )
.append( getQualifiedName( dialect, defaultCatalog, defaultSchema ) )
.append( " (" );
boolean identityColumn = idValue != null && idValue.isIdentityColumn( 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" );
}
}
boolean useUniqueConstraint = col.isUnique() &&
( !col.isNullable() || dialect.supportsNotNullUnique() );
if ( useUniqueConstraint ) {
if ( dialect.supportsUnique() ) {
buf.append( " unique" );
}
else {
UniqueKey uk = getOrCreateUniqueKey( col.getQuotedName( dialect ) + '_' );
uk.addColumn( 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 ) );
}
if ( dialect.supportsUniqueConstraintInCreateAlterTable() ) {
Iterator ukiter = getUniqueKeyIterator();
while ( ukiter.hasNext() ) {
UniqueKey uk = (UniqueKey) ukiter.next();
String constraint = uk.sqlConstraintString( dialect );
if ( constraint != null ) {
buf.append( ", " ).append( constraint );
}
}
}
/*Iterator idxiter = getIndexIterator();
while ( idxiter.hasNext() ) {
Index idx = (Index) idxiter.next();
buf.append(',').append( idx.sqlConstraintString(dialect) );
}*/
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) {
StringBuffer buf = new StringBuffer( "drop table " );
if ( dialect.supportsIfExistsBeforeTableName() ) {
buf.append( "if exists " );
}
buf.append( getQualifiedName( dialect, defaultCatalog, defaultSchema ) )
.append( dialect.getCascadeConstraintsString() );
if ( dialect.supportsIfExistsAfterTableName() ) {
buf.append( " if exists" );
}
return buf.toString();
}
public PrimaryKey getPrimaryKey() {
return primaryKey;
}
public void setPrimaryKey(PrimaryKey primaryKey) {
this.primaryKey = primaryKey;
}
public Index getOrCreateIndex(String indexName) {
Index 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 (Index) indexes.get( indexName );
}
public Index addIndex(Index index) {
Index current = (Index) 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 = (UniqueKey) 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 = "UK" + uniqueColumnString( keyColumns.iterator() );
UniqueKey uk = getOrCreateUniqueKey( keyName );
uk.addColumns( keyColumns.iterator() );
return uk;
}
public UniqueKey getUniqueKey(String keyName) {
return (UniqueKey) uniqueKeys.get( keyName );
}
public UniqueKey getOrCreateUniqueKey(String keyName) {
UniqueKey uk = (UniqueKey) 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();
if ( keyName != null ) {
fk.setName( keyName );
}
else {
fk.setName( "FK" + uniqueColumnString( keyColumns.iterator(), referencedEntityName ) );
//TODO: add referencedClass to disambiguate to FKs on the same
// columns, pointing to different tables
}
fk.setTable( this );
foreignKeys.put( key, fk );
fk.setReferencedEntityName( referencedEntityName );
fk.addColumns( keyColumns.iterator() );
if ( referencedColumns != null ) {
fk.addReferencedColumns( referencedColumns.iterator() );
}
}
if ( keyName != null ) {
fk.setName( keyName );
}
return fk;
}
public String uniqueColumnString(Iterator iterator) {
return uniqueColumnString( iterator, null );
}
public String uniqueColumnString(Iterator iterator, String referencedEntityName) {
int result = 0;
if ( referencedEntityName != null ) {
result += referencedEntityName.hashCode();
}
while ( iterator.hasNext() ) {
result += iterator.next().hashCode();
}
return ( Integer.toHexString( name.hashCode() ) + Integer.toHexString( result ) ).toUpperCase();
}
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) {
this.catalog = catalog;
}
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 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() {
StringBuffer buf = new StringBuffer().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 ) {
StringBuffer buf = new StringBuffer()
.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 ) {
StringBuffer buf = new StringBuffer()
.append( "comment on column " )
.append( tableName )
.append( '.' )
.append( column.getQuotedName( dialect ) )
.append( " is '" )
.append( columnComment )
.append( "'" );
comments.add( buf.toString() );
}
}
}
return comments.iterator();
}
}
|