com.legstar.base.visitor

Class DefaultFromCobolChoiceStrategy

java.lang.Object

com.legstar.base.visitor.DefaultFromCobolChoiceStrategy

All Implemented Interfaces:

FromCobolChoiceStrategy

public class DefaultFromCobolChoiceStrategy
extends Object
implements FromCobolChoiceStrategy

Default strategy for choice alternative selection.

Alternatives are taken in the order they were added to the Choice. The first one that validates (mainframe data is compatible) is selected.

If no alternative validates, returns null.

Constructor Summary

Constructors

Constructor and Description
DefaultFromCobolChoiceStrategy(CobolContext cobolContext)

Method Summary

Modifier and Type	Method and Description
CobolType	choose(String choiceFieldName, CobolChoiceType cobolChoiceType, Map<String,Object> variables, byte[] hostData, int start, int length) Select one alternative in choices.
Set<String>	getVariableNames() Provides a list of variable names whose values are to be collected before the choice is reached.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultFromCobolChoiceStrategy

public DefaultFromCobolChoiceStrategy(CobolContext cobolContext)

Method Detail

choose

public CobolType choose(String choiceFieldName,
                        CobolChoiceType cobolChoiceType,
                        Map<String,Object> variables,
                        byte[] hostData,
                        int start,
                        int length)

Description copied from interface: FromCobolChoiceStrategy

Select one alternative in choices.

Specified by:

choose in interface FromCobolChoiceStrategy

Parameters:

choiceFieldName - the choice field name in the parent structure.

cobolChoiceType - the choice field type

variables - contains all custom variables values collected before reaching the choice

hostData - the host data

start - the start position within the host data for the entire parent structure

length - how many bytes of hostData contains actual data to process

Returns:

a selected alternative or null if unable to select one

getVariableNames

public Set<String> getVariableNames()

Description copied from interface: FromCobolChoiceStrategy

Provides a list of variable names whose values are to be collected before the choice is reached. These values are needed to make the alternative choice decision.

Specified by:

getVariableNames in interface FromCobolChoiceStrategy

Returns:

list of variable names whose values are to be collected