org.sormula.operation.cascade

Class SelectCascadeOperation<S,T>

java.lang.Object

org.sormula.operation.cascade.CascadeOperation<S,T>

org.sormula.operation.cascade.SelectCascadeOperation<S,T>

Type Parameters:

S - row class of table that is source of cascade

T - row class of table that is target of cascade

All Implemented Interfaces:

java.lang.AutoCloseable

public class SelectCascadeOperation<S,T>
extends CascadeOperation<S,T>

Cascade that selects rows from target table into target field when source operation initiates a cascade.

Author:

Jeff Miller

Constructor Summary

Constructors

Constructor and Description
SelectCascadeOperation(SormulaField<S,?> targetField, Table<T> targetTable, SelectCascade selectCascadeAnnotation) Constructor used by SelectOperation.

Method Summary

Methods

Modifier and Type	Method and Description
void	cascade(S sourceRow) Performs cascade operation.
void	close() Cleans up by closing any JDBC resources.
void	prepare() Prepares operation by initializing JDBC statements.
protected void	prepareParameterFields() Uses reflection to get fields for each of the source class variables that will be read from source and set as parameters on cascade operation.
protected void	setParameters(S sourceRow) cascade(S) invokes this method to set parameters in cascade operation based upon parameter fields that were created by prepareParameterFields().
protected T[]	toTargetArray(java.util.Collection<T> c)

Methods inherited from class org.sormula.operation.cascade.CascadeOperation

createOperation, getTargetField, getTargetTable, isPost

Methods inherited from class java.lang.Object

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

Constructor Detail

SelectCascadeOperation

public SelectCascadeOperation(SormulaField<S,?> targetField,
                      Table<T> targetTable,
                      SelectCascade selectCascadeAnnotation)

Constructor used by SelectOperation.

Parameters:

targetField - cascade select operation modifies this field

targetTable - cascade select operation is performed on this table

selectCascadeAnnotation - cascade operation

Method Detail

cascade

public void cascade(S sourceRow)
             throws OperationException

Performs cascade operation.

Specified by:

cascade in class CascadeOperation<S,T>

Parameters:

sourceRow - row in parent table that was source the cascade

Throws:

OperationException - if error

prepare

public void prepare()
             throws OperationException

Prepares operation by initializing JDBC statements.

Specified by:

prepare in class CascadeOperation<S,T>

Throws:

OperationException - if error

prepareParameterFields

protected void prepareParameterFields()
                               throws OperationException

Uses reflection to get fields for each of the source class variables that will be read from source and set as parameters on cascade operation. Parameter values are set when setParameters(S) is invoked by cascade(S).

Throws:

OperationException - if error

setParameters

protected void setParameters(S sourceRow)
                      throws OperationException

cascade(S) invokes this method to set parameters in cascade operation based upon parameter fields that were created by prepareParameterFields(). Override for custom parameter initialization.

Parameters:

sourceRow - cascade source row

Throws:

OperationException

close

public void close()
           throws OperationException

Cleans up by closing any JDBC resources.

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in class CascadeOperation<S,T>

Throws:

OperationException - if error

toTargetArray

protected T[] toTargetArray(java.util.Collection<T> c)
                     throws OperationException

Throws:

OperationException