Package net.ontopia.persistence.proxy

Class AggregateFieldInfo

java.lang.Object

net.ontopia.persistence.proxy.AbstractFieldInfo

net.ontopia.persistence.proxy.AggregateFieldInfo

All Implemented Interfaces:

FieldHandlerIF, FieldInfoIF

public class AggregateFieldInfo
extends AbstractFieldInfo

INTERNAL: A field that references an aggregate class.

An aggregate field is a composite of one or more fields that together represent the fields of instances of the aggregate value class.

Field Summary

Fields

Modifier and Type	Field	Description
protected int	column_count
protected FieldInfoIF[]	fields
protected ClassInfoIF	value_cinfo
protected String[]	value_columns

Fields inherited from class net.ontopia.persistence.proxy.AbstractFieldInfo

cardinality, field, getter, index, is_collection, name, parent_cinfo, readonly, setter, value_class

Fields inherited from interface net.ontopia.persistence.proxy.FieldInfoIF

MANY_TO_MANY, ONE_TO_MANY, ONE_TO_ONE

Constructor Summary

Constructors

Constructor	Description
AggregateFieldInfo(ClassInfoIF parent_cinfo, FieldDescriptor field, int index)

Method Summary

Modifier and Type	Method	Description
protected void	aggregateColumnNames(List<String> columns)
void	bind(Object value, PreparedStatement stm, int stmt_index)	INTERNAL: Binds the object field value starting from the given offset in the prepared statement.
protected String[]	computeValueColumns()
int	getColumnCount()	INTERNAL: Returns the number of columns that the field spans.
ClassInfoIF	getValueClassInfo()	INTERNAL: Gets the class info for the field's value type.
String[]	getValueColumns()	INTERNAL: Returns the names of the columns that the field spans.
boolean	isIdentityField()	INTERNAL: Returns true if the field handler references an object identity field.
Object	load(AccessRegistrarIF registrar, TicketIF ticket, ResultSet rs, int rsindex, boolean direct)	INTERNAL: Loads from its containing fields an aggregate object.
protected Object	readAggregateObject(AccessRegistrarIF registrar, TicketIF ticket, ResultSet rs, int rsindex, boolean direct)
void	retrieveFieldValues(Object value, List<Object> field_values)
void	retrieveSQLValues(Object value, List<SQLValueIF> sql_values)
String	toString()

Methods inherited from class net.ontopia.persistence.proxy.AbstractFieldInfo

getCardinality, getDescriptor, getGetterMethod, getIndex, getJoinKeys, getJoinTable, getManyKeys, getName, getParentClassInfo, getSetterMethod, getTable, getValue, getValueClass, isAggregateField, isCollectionField, isPrimitiveField, isReadOnly, isReferenceField, setValue

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

value_cinfo

protected ClassInfoIF value_cinfo

fields

protected FieldInfoIF[] fields

value_columns

protected String[] value_columns

column_count

protected int column_count

Constructor Detail

AggregateFieldInfo

public AggregateFieldInfo(ClassInfoIF parent_cinfo,
                          FieldDescriptor field,
                          int index)

Method Detail

getValueClassInfo

public ClassInfoIF getValueClassInfo()

Description copied from interface: FieldInfoIF

INTERNAL: Gets the class info for the field's value type. Note that primitive value classes don't have a class info.

getColumnCount

public int getColumnCount()

Description copied from interface: FieldHandlerIF

INTERNAL: Returns the number of columns that the field spans.

isIdentityField

public boolean isIdentityField()

Description copied from interface: FieldHandlerIF

INTERNAL: Returns true if the field handler references an object identity field.

getValueColumns

public String[] getValueColumns()

Description copied from interface: FieldInfoIF

INTERNAL: Returns the names of the columns that the field spans.

computeValueColumns

protected String[] computeValueColumns()

aggregateColumnNames

protected void aggregateColumnNames(List<String> columns)

readAggregateObject

protected Object readAggregateObject(AccessRegistrarIF registrar,
                                     TicketIF ticket,
                                     ResultSet rs,
                                     int rsindex,
                                     boolean direct)
                              throws SQLException

Throws:

SQLException

load

public Object load(AccessRegistrarIF registrar,
                   TicketIF ticket,
                   ResultSet rs,
                   int rsindex,
                   boolean direct)
            throws SQLException

INTERNAL: Loads from its containing fields an aggregate object.

Throws:

SQLException

bind

public void bind(Object value,
                 PreparedStatement stm,
                 int stmt_index)
          throws SQLException

Description copied from interface: FieldHandlerIF

INTERNAL: Binds the object field value starting from the given offset in the prepared statement. The number of columns actually bound depends on the type of object field.

Throws:

SQLException

retrieveFieldValues

public void retrieveFieldValues(Object value,
                                List<Object> field_values)

retrieveSQLValues

public void retrieveSQLValues(Object value,
                              List<SQLValueIF> sql_values)

toString

public String toString()

Overrides:

toString in class Object