jsdai.lang
Class SdaiContext

java.lang.Object
  jsdai.lang.SdaiContext

public class SdaiContext

extends java.lang.Object

This class servers as context for several JSDAI operations. The main purposes of this class are the following:

• Express environment for expressions. The instance of SdaiContext class is the first parameter in the methods that correspond to express functions, procedures, rules and derived attributes.
• Execution context for some mapping read or write operations
• Execution context for Express-X operations
• Schema information for extensible selects, extensible enumerations, and population dependent bounds

Field Summary

ASdaiModel	domain Provides the domain for usedin in expressions, mapping operations, etc.
java.util.Hashtable	mapHashTable Provides hash table structure to store target data set for Express-X map schema
SdaiModel	mappedWorkingModel Provides ARM model used by some mapping operations.
ASdaiModel	mappingDomain Provides the mapping domain for mapping operations
jsdai.dictionary.ESchema_definition	schema Provides the schema for typeOf()
jsdai.mapping.ESchema_mapping	schemaMapping Provides schema mapping for Express-X operations.
SdaiModel	src_model Provides source model for Express-X map.
SdaiModel	tar_model Provides target model for Express-X map.
jsdai.mapping.EUof_mapping[]	uofs Provides uof list used by some mapping operations.
SdaiModel	working_model Used when temporory instances are needed to be created during the evaluation of expressions.
ASdaiModel	working_modelAggr Provides the aggregate of working models.

Constructor Summary

SdaiContext()
Creates an empty SdaiContext.

SdaiContext(EEntity inst)
Creates a new SdaiContext.

SdaiContext(jsdai.dictionary.ESchema_definition a_schema, ASdaiModel a_domain, SdaiModel a_working_model)
Creates a new SdaiContext.

SdaiContext(SdaiModel workingModel)
Creates a new SdaiContext based on working model.

Method Summary

boolean	isUofMapping(java.lang.String uofName) Returns true, if provided UOF is found in context's usable UOF's
void	setUofMappings(java.lang.String[] values) Sets the list of uofs for mapping operations.

Methods inherited from class java.lang.Object

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

Field Detail

schema

public jsdai.dictionary.ESchema_definition schema

Provides the schema for typeOf()

domain

public ASdaiModel domain

Provides the domain for usedin in expressions, mapping operations, etc.

mappingDomain

public ASdaiModel mappingDomain

Provides the mapping domain for mapping operations

working_model

public SdaiModel working_model

Used when temporory instances are needed to be created during the evaluation of expressions. The non-temporary application model may be provided if needed. Working model is also used in some mapping operations.

working_modelAggr

public ASdaiModel working_modelAggr

Provides the aggregate of working models.

mappedWorkingModel

public SdaiModel mappedWorkingModel

Provides ARM model used by some mapping operations.

uofs

public jsdai.mapping.EUof_mapping[] uofs

Provides uof list used by some mapping operations.

schemaMapping

public jsdai.mapping.ESchema_mapping schemaMapping

Provides schema mapping for Express-X operations.

src_model

public SdaiModel src_model

Provides source model for Express-X map.

tar_model

public SdaiModel tar_model

Provides target model for Express-X map.

mapHashTable

public java.util.Hashtable mapHashTable

Provides hash table structure to store target data set for Express-X map schema

Constructor Detail

SdaiContext

public SdaiContext()

Creates an empty SdaiContext.

SdaiContext

public SdaiContext(EEntity inst)
            throws SdaiException

Creates a new SdaiContext.

Parameters:

inst - The entity instance to base the context on

Throws:

SdaiException - if an error occurs in underlying JSDAI operations

SdaiContext

public SdaiContext(SdaiModel workingModel)
            throws SdaiException

Creates a new SdaiContext based on working model.

Parameters:

workingModel - The working SdaiModel to base the context on

Throws:

SdaiException - if an error occurs in underlying JSDAI operations

Since:

3.6.0

SdaiContext

public SdaiContext(jsdai.dictionary.ESchema_definition a_schema,
                   ASdaiModel a_domain,
                   SdaiModel a_working_model)
            throws SdaiException

Creates a new SdaiContext.

Parameters:

a_schema - The schema definition of the context

a_domain - The domain of the context

a_working_model - The working model of the context

Throws:

SdaiException - if an error occurs in underlying JSDAI operations

Method Detail

isUofMapping

public boolean isUofMapping(java.lang.String uofName)
                     throws SdaiException

Returns true, if provided UOF is found in context's usable UOF's

Parameters:

uofName - The name uf UOF

Returns:

True if uof was found and false if uof was not found

Throws:

SdaiException - if an error occurs in underlying JSDAI operations

setUofMappings

public void setUofMappings(java.lang.String[] values)
                    throws SdaiException

Sets the list of uofs for mapping operations.

Parameters:

values - String array with the names of uofs

Throws:

SdaiException - if an error occurs in underlying JSDAI operations