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/*
* MappingClassElementImpl.java
*
* Created on March 3, 2000, 1:11 PM
*/
package com.sun.jdo.api.persistence.model.mapping.impl;
import java.util.*;
import java.beans.PropertyVetoException;
import org.netbeans.modules.dbschema.*;
import org.netbeans.modules.dbschema.util.NameUtil;
import com.sun.jdo.api.persistence.model.*;
import com.sun.jdo.api.persistence.model.mapping.*;
import com.sun.jdo.api.persistence.model.jdo.PersistenceClassElement;
import com.sun.jdo.spi.persistence.utility.JavaTypeHelper;
import org.glassfish.persistence.common.I18NHelper;
/**
*
* @author Mark Munro
* @author Rochelle Raccah
* @version %I%
*/
public class MappingClassElementImpl extends MappingElementImpl
implements MappingClassElement
{
// used in properties bitmask, jeff will check if used
public static final int CLONE_FIELDS = 1;
public static final int CLONE_DEEP = 2;
public static final int CLONE_MASK = 3;
public static final int NAVIGABLE = 4;
PersistenceClassElement _persistenceElement;
private boolean _isModified;
private int _properties;
private ArrayList _tables; // array of MappingTableElement
private ArrayList _fields; // array of MappingFieldElement
/** The current version number.
* Note: Please increment this if there are any changes in the
* mapping model that might cause incompatibilities to older versions.
*/
private static final int CURRENT_VERSION_NO = 5;
/** Version number of this MappingClassElementImpl object.
* This number is set by the initilaizer of the declaration or
* set by the archiver when reading a mapping file.
*/
private int versionNo = CURRENT_VERSION_NO;
/** The database root for this MappingClassElement.
* The database root is the schema name of of all the db elements
* attached to this MappingClassElement.
*/
private String _databaseRoot;
/** Consistency Level of this MappingClassElement.
*/
private int _consistencyLevel;
/*
// possibly for EJB use later
// private String EJBName;
// which of these (one from desc, one from config)?
// public Class finderClass;
// private String finderClass;
// private Class finderClassType;
// public static final String DEFAULT_JAVA_FINDERCLASS ="not yet implemented";
// end possibly for EJB use later
*/
// possibly for sequence/identity fields later
// public ColumnElement uniqueIDCol;
/** Create new MappingClassElementImpl with no corresponding persistence
* element or name. This constructor should only be used for cloning and
* archiving.
*/
public MappingClassElementImpl ()
{
this((String)null);
}
/** Creates new MappingClassElementImpl with the corresponding name
* @param name the name of the element
*/
public MappingClassElementImpl (String name)
{
super(name);
_consistencyLevel = NONE_CONSISTENCY;
_properties = _properties | NAVIGABLE;
}
/** Creates new MappingClassElementImpl with a corresponding
* PersistenceClassElement
* @param element the persistence element with which to be associated
*/
public MappingClassElementImpl (PersistenceClassElement element)
{
this((element != null) ? element.getName() : null);
setPersistenceElement(element);
}
/** Returns the version number of this MappingClassElement object.
* Please note, the returned version number reflects the version number at
* the last save, NOT the version number of the memory representation.
* @return version number
*/
public int getVersionNumber () { return versionNo; }
/** Set the version number of this MappingClassElement.
* @param version the new version number
*/
private void setVersionNumber (int version) { versionNo = version; }
/** Returns true if the version number of this MappingClassElement object
* is older than the current version number of the archiving scheme.
* @see #getVersionNumber
* @return true if it is in need of updating, false otherwise
*/
public boolean hasOldVersionNumber ()
{
return (getVersionNumber() < CURRENT_VERSION_NO);
}
/** Returns the mapping class element associated with the class with the
* given string name, using the given model object to look it up.
* @param name the fully qualified name of the desired class
* @param model the model object to be used to look it up
* @return mapping class element representing the desired class
*/
public static MappingClassElement forName (String name, Model model)
{
return model.getMappingClass(name);
}
/** Fires property change event. This method overrides that of
* MappingElementImpl to update the mapping class element's modified
* status.
* @param name property name
* @param o old value
* @param n new value
*/
protected final void firePropertyChange (String name, Object o, Object n)
{
// even though o == null and n == null will signify a change, that
// is consistent with PropertyChangeSupport's behavior and is
// necessary for this to work
boolean noChange = ((o != null) && (n != null) && o.equals(n));
super.firePropertyChange(name, o, n);
if (!(PROP_MODIFIED.equals(name)) && !noChange)
setModified(true);
}
/** Fires vetoable change event. This method overrides that of
* MappingElementImpl to give listeners a chance to block
* changes on the mapping class element modified status.
* @param name property name
* @param o old value
* @param n new value
* @exception PropertyVetoException when the change is vetoed by a listener
*/
protected final void fireVetoableChange (String name, Object o, Object n)
throws PropertyVetoException
{
// even though o == null and n == null will signify a change, that
// is consistent with PropertyChangeSupport's behavior and is
// necessary for this to work
boolean noChange = ((o != null) && (n != null) && o.equals(n));
super.fireVetoableChange(name, o, n);
if (!(PROP_MODIFIED.equals(name)) && !noChange)
fireVetoableChange(PROP_MODIFIED, Boolean.FALSE, Boolean.TRUE);
}
/** @return persistence class element for this mapping class element
*/
public final PersistenceClassElement getPersistenceElement ()
{
return _persistenceElement;
}
/** Set the persistence class element for this mapping class element.
* @param element the persistence class element
*/
public void setPersistenceElement (PersistenceClassElement element)
{
_persistenceElement = element;
}
// TBD if needed
/*public void clear()
{
Iterator fieldIterator = getFields().iterator();
while (fieldIterator.hasNext())
((MappingFieldElement)fieldIterator.next()).clear();
_tables = new ArrayList();
}
*/
//================= implementation of MappingClassElement ================
/** Gets the modified flag for this mapping class.
* @return <code>true</code> if there have been (property) changes to this
* class, <code>false</code> otherwise.
*/
public boolean isModified () { return _isModified; }
/** Set the modified flag for this mapping class to flag. This is usually
* set to <code>true</code> by property changes and <code>false</code>
* after a save.
* @param flag if <code>true</code>, this class is marked as modified;
* if <code>false</code>, it is marked as unmodified.
*/
public void setModified (boolean flag)
{
boolean oldFlag = isModified();
if (flag != oldFlag)
{
_isModified = flag;
firePropertyChange(PROP_MODIFIED, JavaTypeHelper.valueOf(oldFlag),
JavaTypeHelper.valueOf(flag));
}
}
/** Gets the consistency level of this mapping class.
* @return the consistency level, one of {@link #NONE_CONSISTENCY},
* {@link #CHECK_MODIFIED_AT_COMMIT_CONSISTENCY},
* {@link #CHECK_ALL_AT_COMMIT_CONSISTENCY},
* {@link #LOCK_WHEN_MODIFIED_CONSISTENCY},
* {@link #LOCK_WHEN_MODIFIED_CHECK_ALL_AT_COMMIT_CONSISTENCY},
* {@link #LOCK_WHEN_LOADED_CONSISTENCY}, or
* {@link #VERSION_CONSISTENCY}.
* The default is {@link #NONE_CONSISTENCY}.
*/
public int getConsistencyLevel () { return _consistencyLevel; }
/** Set the consistency level of this mapping class.
* @param level an integer indicating the consistency level, one of:
* {@link #NONE_CONSISTENCY},{@link #CHECK_MODIFIED_AT_COMMIT_CONSISTENCY},
* {@link #CHECK_ALL_AT_COMMIT_CONSISTENCY},
* {@link #LOCK_WHEN_MODIFIED_CONSISTENCY},
* {@link #LOCK_WHEN_MODIFIED_CHECK_ALL_AT_COMMIT_CONSISTENCY},
* {@link #LOCK_WHEN_LOADED_CONSISTENCY}, or
* {@link #VERSION_CONSISTENCY}.
* @exception ModelException if impossible.
*/
public void setConsistencyLevel (int level) throws ModelException
{
Integer old = new Integer(getConsistencyLevel());
Integer newLevel = new Integer(level);
try
{
fireVetoableChange(PROP_CONSISTENCY, old, newLevel);
_consistencyLevel = level;
firePropertyChange(PROP_CONSISTENCY, old, newLevel);
}
catch (PropertyVetoException e)
{
throw new ModelVetoException(e);
}
}
/** Returns the name of the SchemaElement which represents the
* database used by the tables mapped to this mapping class.
* @return the name of the database root for this mapping class
*/
public String getDatabaseRoot () { return _databaseRoot; }
/** Set the database root for this MappingClassElement.
* The root represents the database used by the tables mapped to
* this mapping class.
* @param root the new database root
* @exception ModelException if impossible
*/
public void setDatabaseRoot (SchemaElement root) throws ModelException
{
String old = getDatabaseRoot();
String newRoot = ((root != null) ? root.getName().getFullName() : null);
try
{
fireVetoableChange(PROP_DATABASE_ROOT, old, newRoot);
_databaseRoot = newRoot;
firePropertyChange(PROP_DATABASE_ROOT, old, newRoot);
}
catch (PropertyVetoException e)
{
throw new ModelVetoException(e);
}
}
/** Returns the list of tables (MappingTableElements) used by this mapping
* class.
* @return the meta data tables for this mapping class
*/
public ArrayList getTables ()
{
if (_tables == null)
_tables = new ArrayList();
return _tables;
}
/** Scans through this mapping class looking for a table whose
* name matches the name passed in.
* @param name name of the table to find.
* @return the meta data table whose name matches the name parameter
*/
public MappingTableElement getTable (String name)
{
Iterator tableIterator = getTables().iterator();
while (tableIterator.hasNext())
{
MappingTableElement table =
(MappingTableElement)tableIterator.next();
if (table.getName().equals(name))
return table;
}
return null;
}
/** Convenience method which accepts a table element and attempts to add
* it as either a primary or secondary table depending on the existing list
* of tables and the foreign keys for the table.
* @param table table element to be added as either a primary or secondary
* table.
* @exception ModelException if impossible
*/
public void addTable (TableElement table) throws ModelException
{
if (table != null)
{
ArrayList tables = getTables();
// If the table list is empty, this should be the primary table
if (tables.isEmpty())
setPrimaryTable(table);
else
{
HashMap newSecondaryTables = new HashMap();
Iterator iterator = tables.iterator();
boolean found = false;
// If this table has already been added just skip it and return
while (iterator.hasNext())
if (((MappingTableElement)iterator.next()).isEqual(table))
return;
// Add the table as a secondary table as long as there are
// relevant fks setup. Otherwise, throw an exception
iterator = tables.iterator();
while (iterator.hasNext())
{
MappingTableElement mappingTable =
(MappingTableElement)iterator.next();
String absoluteTableName = NameUtil.getAbsoluteTableName(
_databaseRoot, mappingTable.getTable());
ForeignKeyElement[] foreignKeys = TableElement.forName(
absoluteTableName).getForeignKeys();
int i, count =
((foreignKeys != null) ? foreignKeys.length : 0);
for (i = 0; i < count; i++)
{
ForeignKeyElement fk = foreignKeys[i];
if (table == fk.getReferencedTable())
{
// store it so it can be added after we finish
// iterating the array (can't now because of
// concurrent modification restrictions)
newSecondaryTables.put(mappingTable, fk);
found = true;
}
}
}
if (found) // add the secondary tables now
{
iterator = newSecondaryTables.keySet().iterator();
while (iterator.hasNext())
{
MappingTableElement mappingTable =
(MappingTableElement)iterator.next();
MappingReferenceKeyElement refKey =
addSecondaryTable(mappingTable, table);
refKey.addColumnPairs(((ForeignKeyElement)
newSecondaryTables.get(mappingTable)).
getColumnPairs());
}
}
else
{
throw new ModelException(I18NHelper.getMessage(
getMessages(),
"mapping.table.foreign_key_not_found", table)); // NOI18N
}
}
}
else
{
throw new ModelException(I18NHelper.getMessage(getMessages(),
"mapping.table.null_argument")); // NOI18N
}
}
/** Set the primary table for this mapping class to the supplied table.
* @param table table element to be used as the primary table.
* @exception ModelException if impossible
*/
public void setPrimaryTable (TableElement table) throws ModelException
{
ArrayList tables = getTables();
if (!tables.isEmpty())
{
throw new ModelException(I18NHelper.getMessage(getMessages(),
"mapping.table.primary_table_defined", table)); // NOI18N
}
else
{
UniqueKeyElement key = table.getPrimaryKey();
MappingTableElement mappingTable =
new MappingTableElementImpl(table, this);
SchemaElement schema = table.getDeclaringSchema();
String currentRoot = getDatabaseRoot();
if (currentRoot == null) // set database root
setDatabaseRoot(schema);
else if (!currentRoot.equals(schema.getName().getFullName()))
{
// if database root was set before, it must match
throw new ModelException(I18NHelper.getMessage(
getMessages(), "mapping.table.schema_mismatch", // NOI18N
table.toString(), currentRoot));
}
try
{
fireVetoableChange(PROP_TABLES, null, null);
tables.add(mappingTable);
firePropertyChange(PROP_TABLES, null, null);
}
catch (PropertyVetoException e)
{
throw new ModelVetoException(e);
}
// If can't find a primary key, settle for first unique key.
if (key == null)
{
UniqueKeyElement[] uniqueKeys = table.getUniqueKeys();
if ((uniqueKeys != null) && (uniqueKeys.length > 0))
key = uniqueKeys[0];
}
if (key == null)
{
// This is a warning -- we can still use the table but we
// cannot perform update operations on it. Also the user
// may define the key later.
}
else
{
ColumnElement[] columns = key.getColumns();
int i, count = ((columns != null) ? columns.length : 0);
for (i = 0; i < count; i++)
mappingTable.addKeyColumn(columns[i]);
}
}
}
/** Adds a reference to the supplied table as a secondary table for this
* mapping class. It creates a MappingReferenceKeyElement for the supplied
* primary/secondary table pair.
* @param parentTable mapping table element which should also be the primary
* table.
* @param table table element to be used as a secondary table.
* @exception ModelException if impossible
*/
public MappingReferenceKeyElement addSecondaryTable (MappingTableElement
parentTable, TableElement table) throws ModelException
{
ArrayList tables = getTables();
if ((parentTable == null) || (table == null))
{
throw new ModelException(I18NHelper.getMessage(getMessages(),
"mapping.element.null_argument")); // NOI18N
}
else if (!tables.contains(parentTable))
{
throw new ModelException(I18NHelper.getMessage(getMessages(),
"mapping.table.parent_table_not_found", // NOI18N
parentTable.getTable()));
}
else
{
// Check the parent table's reference keys to make sure that this
// secondary table has not already been added to this parent table.
// If it has, throw an exception
Iterator iterator = parentTable.getReferencingKeys().iterator();
MappingTableElement mappingTable =
new MappingTableElementImpl(table, this);
MappingReferenceKeyElement key =
new MappingReferenceKeyElementImpl(mappingTable);
while (iterator.hasNext())
{
MappingTableElement compareTable =
((MappingReferenceKeyElement)iterator.next()).getTable();
if (compareTable.isEqual(table))
{
throw new ModelException(I18NHelper.getMessage(
getMessages(),
"mapping.table.secondary_table_defined", // NOI18N
new Object[]{table, parentTable.getTable()}));
}
}
try
{
fireVetoableChange(PROP_TABLES, null, null);
parentTable.addReferencingKey(key);
tables.add(mappingTable);
firePropertyChange(PROP_TABLES, null, null);
}
catch (PropertyVetoException e)
{
throw new ModelVetoException(e);
}
return key;
}
}
/** Removes the reference to the supplied table as a mapped table for this
* mapping class. This works whether the table is the primary table or a
* secondary table.
* @param table mapping table element to be removed from this mapping class.
* @exception ModelException if impossible
*/
public void removeTable (MappingTableElement table) throws ModelException
{
if (table != null)
{
Collection tables = getTables();
Iterator iterator = null;
boolean found = false;
try
{
fireVetoableChange(PROP_TABLES, null, null);
found = tables.remove(table);
firePropertyChange(PROP_TABLES, null, null);
}
catch (PropertyVetoException e)
{
throw new ModelVetoException(e);
}
// remove all references to this table
iterator = tables.iterator();
while (iterator.hasNext())
{
MappingTableElement nextTable =
(MappingTableElement)iterator.next();
nextTable.removeReference(table);
}
if (found) // remove any fields mapped to that table
{
ArrayList fieldsToRemove = new ArrayList();
iterator = getFields().iterator();
while (iterator.hasNext())
{
MappingFieldElementImpl mappingField =
(MappingFieldElementImpl)iterator.next();
if (mappingField.isMappedToTable(table))
fieldsToRemove.add(mappingField);
}
iterator = fieldsToRemove.iterator();
while (iterator.hasNext())
{
MappingFieldElement mappingField =
(MappingFieldElement)iterator.next();
boolean versionField = mappingField.isVersion();
removeField(mappingField);
// if it is a version field, add back an unmapped
// field which retains the version flag setting
if (versionField)
{
mappingField = new MappingFieldElementImpl(
mappingField.getName(), this);
mappingField.setVersion(true);
addField(mappingField);
}
}
}
else
{
throw new ModelException(I18NHelper.getMessage(getMessages(),
"mapping.element.element_not_removed", table)); // NOI18N
}
}
else
{
throw new ModelException(I18NHelper.getMessage(getMessages(),
"mapping.element.null_argument")); // NOI18N
}
}
/** Returns the list of fields (MappingFieldElements) in this mapping
* class. This list includes both local and relationship fields.
* @return the mapping fields in this mapping class
*/
public ArrayList getFields ()
{
if (_fields == null)
_fields = new ArrayList();
return _fields;
}
/** Scans through this mapping class looking for a field whose
* name matches the name passed in.
* @param name name of the field to find.
* @return the mapping field whose name matches the name parameter
*/
public MappingFieldElement getField (String name)
{
Iterator fieldIterator = getFields().iterator();
while (fieldIterator.hasNext())
{
MappingFieldElement field =
(MappingFieldElement)fieldIterator.next();
if (name.equals(field.getName()))
return field;
}
return null;
}
/** Adds a field to the list of fields in this mapping class.
* @param field field element to be added
* @exception ModelException if impossible
*/
public void addField (MappingFieldElement field) throws ModelException
{
ArrayList fields = getFields();
if (!fields.contains(field))
{
try
{
fireVetoableChange(PROP_FIELDS, null, null);
fields.add(field);
firePropertyChange(PROP_FIELDS, null, null);
}
catch (PropertyVetoException e)
{
throw new ModelVetoException(e);
}
}
}
/** Removes a field from the list of fields in this mapping class.
* @param field field element to be removed
* @exception ModelException if impossible
*/
public void removeField (MappingFieldElement field) throws ModelException
{
try
{
fireVetoableChange(PROP_FIELDS, null, null);
if (!getFields().remove(field))
{
throw new ModelException(I18NHelper.getMessage(getMessages(),
"mapping.element.element_not_removed", field)); // NOI18N
}
firePropertyChange(PROP_FIELDS, null, null);
}
catch (PropertyVetoException e)
{
throw new ModelVetoException(e);
}
}
/** Returns the list of version fields (MappingFieldElements) in this
* mapping class. This list only includes fields if the consistency
* level is {@link #VERSION_CONSISTENCY}.
* @return the version fields in this mapping class
*/
public List getVersionFields ()
{
List versionFields = new ArrayList();
if (VERSION_CONSISTENCY == getConsistencyLevel())
{
Iterator iterator = getFields().iterator();
while (iterator.hasNext())
{
MappingFieldElement fieldCandidate =
(MappingFieldElement)iterator.next();
if (fieldCandidate.isVersion())
versionFields.add(fieldCandidate);
}
}
return versionFields;
}
/** Gets the navigable flag for this mapping class.
* @return <code>true</code> if lazy initialization will be used,
* <code>false</code> if access to a non-fetched field will result in an
* exception. The default is <code>true</code>.
*/
public boolean isNavigable () { return ((_properties & NAVIGABLE) > 0); }
/** Set the navigable flag for this mapping class to flag.
* @param flag if <code>true</code>, lazy initialization will be used;
* if <code>false</code>, access to a non-fetched field will result in an
* exception.
* @exception ModelException if impossible
*/
public void setNavigable (boolean flag) throws ModelException
{
Boolean old = JavaTypeHelper.valueOf(isNavigable());
Boolean newFlag = JavaTypeHelper.valueOf(flag);
try
{
fireVetoableChange(PROP_NAVIGABLE, old, newFlag);
_properties = (flag) ?
(_properties | NAVIGABLE) : (_properties & ~NAVIGABLE);
firePropertyChange(PROP_NAVIGABLE, old, newFlag);
}
catch (PropertyVetoException e)
{
throw new ModelVetoException(e);
}
}
//============= extra object support for runtime ========================
/** Accept an arraylist of column names and return an array list containing
* the corresponding column or column pair objects.
* @param schemaName the database root used to find the column objects
* @param columnNames array of column names.
* @return an array of corresponding column objects
* @see org.netbeans.modules.dbschema.TableElement#forName
* @see org.netbeans.modules.dbschema.TableElement#getMember
*/
protected static ArrayList toColumnObjects (String schemaName,
ArrayList columnNames)
{
Iterator iterator = columnNames.iterator();
ArrayList objects = new ArrayList();
while (iterator.hasNext())
{
String columnName = (String)iterator.next();
String absoluteColumnName =
NameUtil.getAbsoluteMemberName(schemaName, columnName);
final TableElement table =
TableElement.forName(NameUtil.getTableName(absoluteColumnName));
objects.add(table.getMember(
DBIdentifier.create(absoluteColumnName)));
}
return objects;
}
//============= delegation to PersistenceClassElement ===========
/** Get the fully qualified name of the primary key class for this class
* element. This value is only used if <code>getObjectIdentityType</code>
* returns <code>APPLICATION_IDENTITY</code>
* @return the fully qualified key class name, <code>null</code> if the
* identity type is not managed by the application
* @see PersistenceClassElement#setObjectIdentityType
* @see PersistenceClassElement#APPLICATION_IDENTITY
*
*/
public String getKeyClass ()
{
return getPersistenceElement().getKeyClass();
}
//=============== extra set methods needed for xml archiver ==============
/** Set the list of tables (MappingTableElements) used by this mapping
* class. This method should only be used internally and for cloning
* and archiving.
* @param tables the list of meta data tables for this mapping class
*/
//@olsen: disabled method because not used by archiver
/*
public void setTables (ArrayList tables) { _tables = tables; }
*/
/** Set the list of fields (MappingFieldElements) in this mapping
* class. This method should only be used internally and for cloning
* and archiving.
* @param fields the list of mapping fields in this mapping class
*/
public void setFields (ArrayList fields) { _fields = fields; }
public int getProperties () { return _properties; }
//======== to be used for reference in best guess implementation ==========
// configure methods
/**
* The following method attempts to map a field to a particular table.
* Only local fields are supported at present
* @return boolean to indicate whether the mapping worked
* @param fieldToMap The field to be mapped
* @param table The table the fields to to be mapped to
*/
/* public boolean mapFieldToTable (MappingFieldElement fieldToMap,
TableElement table) throws ModelException
{
boolean lReturn = false;
if ((fieldToMap != null) && (fieldToMap instanceof MappingFieldElement))
{
String lLocalFieldName = fieldToMap.getName();
ColumnElement[] tableColumns = table.getColumns();
int i, count = ((tableColumns != null) ? tableColumns.length : 0);
for (i = 0; i < count; i++)
{
ColumnElement lColumn = tableColumns[i];
if (lLocalFieldName.equalsIgnoreCase(
lColumn.getName().getFullName()))
{
PersistenceClassElement classElement =
fieldToMap.getDeclaringClass().getClassElement();
MappingFieldElement lLocalField =
new MappingFieldElementImpl(
classElement.getField(lLocalFieldName), fieldToMap);
ArrayList columns = lLocalField.getColumns();
// If this field has already been mapped we do not want to
// overwrite the existing mapping as this mechanism
// is an automagic mapping approach
if ((columns != null) || (columns.size() != 0))
lLocalField.addColumn(lColumn);
lReturn = true;
break;
}
}
}
return lReturn;
}
*/
//================== possibly for EJB use later ===========================
/**
* This method returns a finder class as a class type.
* @return The finder class used by this configuration
*/
//public Class getFinderClass() { return finderClass; }
/**
* This method sets the finder class for this configuration.
* @param finderClass The finder class used by this configuration
*/
/*public void setfinderClass(Class finderClass)
{
this.finderClass = finderClass;
}*/
/**
* This method gets the finder classes name.
* @return The finder classes name or if finder class not
* defined returns an empty string.
*/
/* public String getFinderClassName()
{
String lFinderClassName = new String();
if ( this.finderClass != null )
{
lFinderClassName = this.finderClass.getName();
}
return lFinderClassName;
}*/
/**
* This method sets the finder class for this configuration based on the
* name passed in.
* @param finderclassName The finder classes name that this configuration
* should use.
*/
/* public void setFinderClassName(String finderClassName)
throws ClassNotFoundException
{
this.finderClass = this.getClass().getClassLoader().
loadClass(finderClassName);
}*/
/*
public String getFinderClass() { return finderClass; }
public Class getFinderClassType() { return finderClassType; }
public void setFinderClassType(Class c) { finderClassType = c; }
*/
/**
* The following method validates the finder class
* @param finderClassName The finder class name to be validated
*/
/* public boolean vaidateFinderClass(String finderClassName)
{
boolean lValid = false;
if ( finderClassName == null || finderClassName.equals(""))
lValid = false;
else if ( finderClassName.equals(this.DEFAULT_JAVA_FINDERCLASS) )
lValid = true;
else
{
// NEED to do some kind of class lookup here although not sure how
// to do this in netbeans not sure if this is the right approach
// but as long as class path is correct it should work
ClassLoader lClassLoader = this.getClassLoader();
try
{
lClassLoader.loadClass(finderClassName);
}
catch (ClassNotFoundException lError)
{
lValid = false;
}
}
return lValid;
}
public Class getBeanFactoryType() { return beanFactoryType; }
public void setBeanFactoryType(Class c) { beanFactoryType = c; }
*/
/**
* The following method will return a list of all of the
* foreign EJB's referenced in this persistent descriptor
* @return The list of EJB's referenced by this configuration
*/
/*public String[] getForeignEJBNames()
{
// Allocate a to the size of the number of elements
// elements in the array list of fields as we can't
// return a bigger array that that
String[] lEJBNames = new String[field.size()];
int i = 0, count = this.fields.size();
for (; i > count; i++)
{
MappingFieldElement lField = this.fields.get(i);
if ( lField instanceof MappingRelationshipElement )
{
// Ok this is a foreign field so get it's EJB name
String lEJBName = (lField)
(MappingRelationshipElement).getEJBType();
if ((lEJBName != null) && (!lEJBName.equals("")))
lEJBNames[i] = new String(lEJBName);
}
// allocate a new array and copy the old array into it before
// returns the new array
String[] lReturnArray = new String[i + 1];
System.arraycopy(lEJBNames, 0, lReturnArray, 0, i + 1);
return lReturnArray;
}
}*/
/** This method is called after a MappingClassElement is unarchived
* from a .mapping file. This method provides a hook to do any checking
* (version number checking) and conversion after unarchiving.
* @exception ModelException if impossible
*/
public void postUnarchive () throws ModelException
{
// check version number
switch (versionNo)
{
case 0: // outdated version number
case 1: // outdated version number
throw new ModelException (I18NHelper.getMessage(getMessages(),
"file.incompatible_version", getName())); //NOI18N
case 2:
// Boston format => convert to Pilsen format
stripSchemaName();
break;
case 3: // same as 4 except package names are different
case 4: // same as 5 except version field not a choice for MFE
case MappingClassElementImpl.CURRENT_VERSION_NO:
// OK
break;
default: // version number is unknown
throw new ModelException (I18NHelper.getMessage(getMessages(),
"file.incompatible_version", getName())); //NOI18N
}
}
/** This method is called prior to storing a MappingClassElement in a
* .mapping file. This method provides a hook to do any conversion
* before archiving.
* Note, the signature of preArchive in the interface MappingClassElement
* includes a throws clause (ModelException), but the actual implementation
* does not throw an exception.
*/
public void preArchive ()
{
// update version number
setVersionNumber(CURRENT_VERSION_NO);
}
//=============== extra method for Boston -> Pilsen conversion ============
/** Boston to Pilsen conversion.
* This method converts the absolute db element names to relative names and
* stores the database root (meaning the schema name) in the
* MappingClassElement. The method is recursively called for all
* MappingTableElements and MappingFieldElements attached to this
* MappingClassElement.
*/
protected void stripSchemaName ()
{
String schemaName = null;
// calculate schemaName from first MappingTableElement
if (_tables != null && !_tables.isEmpty())
{
schemaName = NameUtil.getSchemaName(
((MappingTableElement)_tables.get(0)).getTable());
}
// set the schemaName as database root
_databaseRoot = schemaName;
// do not change the _isModified flag
// handle _tables
if (_tables != null)
{
Iterator i = _tables.iterator();
while (i.hasNext())
((MappingTableElementImpl)i.next()).stripSchemaName();
}
// handle _fields
if (_fields != null)
{
Iterator i = _fields.iterator();
while (i.hasNext())
((MappingFieldElementImpl)i.next()).stripSchemaName();
}
}
}