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Oracle ADF Model and Business Components API Reference 10.1.2 B14022-01 | ||||||||||
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java.lang.Objectoracle.jbo.common.NamedObjectImpl
oracle.jbo.mom.DefinitionObject
oracle.jbo.server.DefObject
oracle.jbo.server.AssociationDefBase
oracle.jbo.server.EntityAssociation
Describes the relationship between two Entity Objects. An association selects attributes from source and destination Entity Objects. Typically, these attributes represent key fields in a database table, but an association can be defined using any Entity Object attributes. Although an association identifies a source and destination end, the association can be navigated in either direction. Associations have package scope.
The EntityAssociation class determines the content of the
AssociationDefImpl
attributes on the Entity definitions. The AssociationDefImpl attributes are the
attributes at the source Entity and the destination Entity. There are two
AssociationDefImpls for each EntityAssociation.
For example, in the case of an association between Dept and Emp, Dept will have
one AssociationDefImpl attribute for Emp; Emp will have one AssociationDefImpl
attribute for Dept. The EntityAssociation links the two AssociationDefImpls.
An instance of the EntityAssociation class maps to the XML file for the association. At runtime, when the XML for the EntityAssociation is read, the framework creates the two AssociationDefImpls and determines whether they are source or destination attributes.
Field Summary | |
protected AttributeDefImpl[] |
mBindVars
The list of AttributeDefImpls as bind variables on one end. |
protected AttributeDefImpl[] |
mOtherBindVars
The list of bind variable AttributeDefImpls on one end. |
Fields inherited from class oracle.jbo.server.AssociationDefBase |
mComponentClass |
Fields inherited from class oracle.jbo.mom.DefinitionObject |
mBaseDefObject, mExtendedDefObjects, mObjectResolved |
Fields inherited from class oracle.jbo.common.NamedObjectImpl |
mFullName, mObjName, mParent, mProperties |
Method Summary | |
static EntityAssociation |
findEntityAssociation(java.lang.String entityAssocName)
Finds the named entity association from the statically maintained list of metaobjects. |
AssociationDefImpl |
getAccessorByEndName(java.lang.String endName)
Deprecated. Deprecated since 5.0. Instead, use AssociationDefBase.findEndAccessorByName(). |
AssociationEnd |
getAssociationEnd(java.lang.String endName)
Deprecated. Deprecated since 5.0. Instead, use AssociationDefBase.findEndByName(). |
AttributeDefImpl[] |
getBindVariables()
Returns the bind variables for one end of the association. |
java.lang.Class |
getComponentClass()
Returns the class name of this Entity association's reference. |
EntityDefImpl |
getEntityDef()
Deprecated. Deprecated since 5.0. Instead, use AssociationDefBase.getSourceOwner() and down cast it to EntityDefImpl. |
AttributeDefImpl[] |
getOtherBindVariables()
Returns the bind variables for the other end of the association. |
EntityDefImpl |
getOtherEntityDef()
Deprecated. Deprecated since 5.0. Instead, use AssociationDefBase.getDestinationOwner() and down cast it to EntityDefImpl. |
void |
link(AssociationDefImpl srcAccr,
AssociationDefImpl dstAccr)
Establishes a link between two Entity Objects. |
protected void |
resolveReferences()
|
void |
setBindVariables(AttributeDefImpl[] vars)
Sets the bind variables for one end of the association. |
void |
setOtherBindVariables(AttributeDefImpl[] vars)
Sets the bind variables for the other end of the association. |
Methods inherited from class oracle.jbo.mom.DefinitionObject |
addExtendedDefObject, getContainerDef, getContainerName, getExtendedDefObjects, hasExtendedDefObjects, isBaseDefFor, isDynamicDefinitionObject, isObjectResolved, setObjectResolved |
Methods inherited from class oracle.jbo.common.NamedObjectImpl |
getFullName, getParent, getProperties, getPropertiesAsStrings, getPropertiesMap, getProperty, refreshProperty, setFullName, setPropertiesMap, setProperty |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
protected AttributeDefImpl[] mBindVars
protected AttributeDefImpl[] mOtherBindVars
Method Detail |
public static EntityAssociation findEntityAssociation(java.lang.String entityAssocName)
entityAssocName
- the fully qualified name of the entity association.
public java.lang.Class getComponentClass()
public void link(AssociationDefImpl srcAccr, AssociationDefImpl dstAccr)
srcAccr
- the source Entity Object's association accessor.dstAccr
- the destination Entity Object's association accessor.public void setBindVariables(AttributeDefImpl[] vars)
vars
- an array of bind variables.setOtherBindVariables(oracle.jbo.server.AttributeDefImpl[])
public AttributeDefImpl[] getBindVariables()
getOtherBindVariables()
public void setOtherBindVariables(AttributeDefImpl[] vars)
vars
- an array of bind variables.setBindVariables(oracle.jbo.server.AttributeDefImpl[])
public AttributeDefImpl[] getOtherBindVariables()
getBindVariables()
protected void resolveReferences()
public EntityDefImpl getEntityDef()
public EntityDefImpl getOtherEntityDef()
public AssociationDefImpl getAccessorByEndName(java.lang.String endName)
endName
- the name of one of the association end.
public AssociationEnd getAssociationEnd(java.lang.String endName)
endName
- the name of one of the association end.
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Oracle ADF Model and Business Components API Reference 10.1.2 B14022-01 | ||||||||||
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