com.whitestein.lsps.engine.lang

Class ContextNamespace

java.lang.Object

com.whitestein.lsps.engine.lang.AbstractContextNamespace

com.whitestein.lsps.engine.lang.ContextNamespace

All Implemented Interfaces:

Namespace, HolderFactory, JavaOperationExecutor, FreeTypeMapping

public class ContextNamespace
extends AbstractContextNamespace

Namespace for context (in base level).

Author:

bhl

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ContextNamespace(ModelProvider modelProvider, Context context) Creates new instance.

Method Summary

Modifier and Type	Method and Description
void	addNewVariable(String name, Type type, boolean isExpressionLocal, boolean readOnly) Adds a new variable.
boolean	canBeInterpretedIn(InterpreterConfiguration configuration) in detached model instance interpretation can be done only in new evaluation levels
boolean	containsVariable(String name) Returns true if this namespace contains variable of given name.
static AbstractContextNamespace	create(ModelProvider modelProvider, Context context) Creates a new namespace according to the evaluation level of the provided context.
BinaryHolder	createBinaryHolder(byte[] data) Creates binary data holder.
BinaryHolder	createBinaryHolder(String datasourceJndi, String recordType, String objectIdentification, String propertyName, Blob data) Creates binary data holder.
Namespace	createChildNamespace(String name, List<? extends Field> fields, List<?> values, Map<FreeType,Type> freeTypeMapping, InterpreterConfiguration configuration)
ClosureHolder	createClosure(ClosureType closureType, ClosureExpression closureExpression, ClosureOrigin origin) Creates new closure corresponding to given closure expression.
ClosureHolder	createClosure(ClosureType closureType, FunctionExpression operationExpression, ClosureOrigin origin) Creates new closure corresponding to given operation expression.
ClosureHolder	createClosure(ClosureType closureType, MethodExpression operationExpression, ClosureOrigin origin) Creates new closure corresponding to given operation expression.
ClosureHolder	createClosureFromExpression(ClosureType closureType, Expression expression, ClosureOrigin origin) Creates new closure from a given expression.
RecordHolder	createExternalRecordProxy(RecordType type, RecordHolder proxySet) Creates a proxy without proxied record.
ListHolder	createList(Collection<?> values) Creates new list with given values (ListHolders are immutable).
MapHolder	createMap(List<?> keys, List<?> values) Creates new map with given values (MapHolders are immutable).
RecordHolder	createNonSharedRecord(RecordType type, Map<String,?> values) Creates new record of given type.
RecordHolder	createRecord(RecordType type, Map<String,?> values) Creates new record with given type.
RecordHolder	createRecord(String type, Map<String,?> values) Creates new record with given type.
ReferenceHolder	createReference(ReferenceType referenceType, ReferenceExpression referenceExpression, List<Property> properties, ClosureOrigin origin) Returns new reference corresponding to given reference expression.
SetHolder	createSet(Collection<?> values) Creates new set with given values (SetHolders are immutable).
InterpreterConfiguration	getConfiguration() Returns interpreter configurartion for this namespace.
HolderFactory	getHolderFactory() Returns an instance of HolderFactory.
Object	getJavaObject() Returns underlying java object if there is some.
Namespace	getLowerLevelNamespace() Returns namespace corresponding to this namespace on lower level.
Namespace	getModuleNamespace(String name) Returns module namespace by its module name or null if it does not exist.
Namespace	getParentNamespace() Returns parent namespace or null if this is top namespace.
Set<String>	getVariableNames() Returns the names of all the variables.
Type	getVariableType(String name) Returns the type of variable or null if it does not exist.
void	initializeVariable(String name, Object value) Sets the initial value of a variable.
boolean	isVariableReadOnly(String name) Returns true if the variable with a given name is read-only.
void	setVariableValue(String name, Object value) Sets value of variable for given name from this namespace.

Methods inherited from class com.whitestein.lsps.engine.lang.AbstractContextNamespace

createChildNamespaceInternal, createRange, executeJavaOperation, getAllFreeTypeNames, getCompiled, getCompiled, getCompiledContext, getConstantValue, getContext, getContextId, getConverter, getEvaluationConverter, getEvaluationLevel, getExecutionContext, getFreeType, getFunctionContext, getModelElementId, getModelId, getModelInstanceId, getModelProvider, getModuleNames, getName, getNamespace, getNamespaceInLevel, getNamespaceModel, getPathQID, getProcessModel, getReferencedContext, getThis, getVariableValue, remove, resolveType, setCompiled, setVariableValueInternal, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.whitestein.lsps.lang.exec.Namespace

addNewVariable, createChildNamespace, getFreeTypeMapping, getTopNamespace, resolveRecordType

Methods inherited from interface com.whitestein.lsps.lang.HolderFactory

createMap, createRecord, createRecord

Constructor Detail

ContextNamespace

protected ContextNamespace(ModelProvider modelProvider,
                           Context context)

Creates new instance.

Parameters:

modelProvider -

context -

Method Detail

create

public static AbstractContextNamespace create(ModelProvider modelProvider,
                                              Context context)

Creates a new namespace according to the evaluation level of the provided context.

Parameters:

modelProvider -

context -

Returns:

the created namespace

getConfiguration

public InterpreterConfiguration getConfiguration()

Description copied from interface: Namespace

Returns interpreter configurartion for this namespace.

Returns:

interpreter configurartion for this namespace

containsVariable

public boolean containsVariable(String name)

Description copied from interface: Namespace

Returns true if this namespace contains variable of given name.

Parameters:

name - variable name

Returns:

true if this namespace contains variable of given name

getModuleNamespace

public Namespace getModuleNamespace(String name)

Description copied from interface: Namespace

Returns module namespace by its module name or null if it does not exist.

Returns:

imported namespace

getParentNamespace

public Namespace getParentNamespace()

Description copied from interface: Namespace

Returns parent namespace or null if this is top namespace.

Returns:

parent namespace

getVariableType

public Type getVariableType(String name)

Description copied from interface: Namespace

Returns the type of variable or null if it does not exist.

Parameters:

name - variable name

Returns:

the type of variable

isVariableReadOnly

public boolean isVariableReadOnly(String name)

Description copied from interface: Namespace

Returns true if the variable with a given name is read-only.

Returns:

true if the variable is read-only

getVariableNames

public Set<String> getVariableNames()

Description copied from interface: Namespace

Returns the names of all the variables.

Returns:

the names of all the variables

setVariableValue

public void setVariableValue(String name,
                             Object value)

Description copied from interface: Namespace

Sets value of variable for given name from this namespace.

Parameters:

name - variable name

value - new variable value

initializeVariable

public void initializeVariable(String name,
                               Object value)

Description copied from interface: Namespace

Sets the initial value of a variable. Can be used to initialize read-only variables. If the variable already has a non-null value, an exception is thrown.

createChildNamespace

public Namespace createChildNamespace(String name,
                                      List<? extends Field> fields,
                                      List<?> values,
                                      Map<FreeType,Type> freeTypeMapping,
                                      InterpreterConfiguration configuration)

Returns:

the created child namespace

addNewVariable

public void addNewVariable(String name,
                           Type type,
                           boolean isExpressionLocal,
                           boolean readOnly)

Description copied from interface: Namespace

Adds a new variable.

getHolderFactory

public HolderFactory getHolderFactory()

Description copied from interface: Namespace

Returns an instance of HolderFactory. This can be used to create different runtime objects.

Returns:

an instance of HolderFactory

createList

public ListHolder createList(Collection<?> values)

Description copied from interface: HolderFactory

Creates new list with given values (ListHolders are immutable). The type is inferred from the types of the values.

Returns:

new list

createSet

public SetHolder createSet(Collection<?> values)

Description copied from interface: HolderFactory

Creates new set with given values (SetHolders are immutable). The type is inferred from the types of the values.

Returns:

new list

createMap

public MapHolder createMap(List<?> keys,
                           List<?> values)

Description copied from interface: HolderFactory

Creates new map with given values (MapHolders are immutable). The type is inferred from the types of the values.

Parameters:

keys - a list of keys

values - a list of values

Returns:

new map

createExternalRecordProxy

public RecordHolder createExternalRecordProxy(RecordType type,
                                              RecordHolder proxySet)

Description copied from interface: HolderFactory

Creates a proxy without proxied record. It can be used only for shared records. When merged a shared record is created. If proxySet is null it creates proxy on level 1. If a proxy set is specified, it creates proxy on the level of the proxy set and adds it to the proxy set.

Returns:

proxy without proxied record

createRecord

public RecordHolder createRecord(RecordType type,
                                 Map<String,?> values)

Description copied from interface: HolderFactory

Creates new record with given type.

values - initial record field values

Returns:

new record with given type

createNonSharedRecord

public RecordHolder createNonSharedRecord(RecordType type,
                                          Map<String,?> values)

Description copied from interface: HolderFactory

Creates new record of given type. The record is always created non persistent, even if the record type is shared. Use this carefully, since this may result in many non shared instances of shared record types swarming in the model context and may cause a lot of exceptional behavior, e.g. when trying to assign not persistent object as a member of association of some other shared instance.

values - initial record field values

Returns:

new record with given type

createRecord

public RecordHolder createRecord(String type,
                                 Map<String,?> values)

Description copied from interface: HolderFactory

Creates new record with given type. The type must be a fully qualified name.

values - initial record field values

Returns:

new record with given type

See Also:

RecordType

createBinaryHolder

public BinaryHolder createBinaryHolder(byte[] data)

Description copied from interface: HolderFactory

Creates binary data holder.

Returns:

binary data holder

createBinaryHolder

public BinaryHolder createBinaryHolder(String datasourceJndi,
                                       String recordType,
                                       String objectIdentification,
                                       String propertyName,
                                       Blob data)

Description copied from interface: HolderFactory

Creates binary data holder.

Returns:

binary data holder

canBeInterpretedIn

public boolean canBeInterpretedIn(InterpreterConfiguration configuration)

in detached model instance interpretation can be done only in new evaluation levels

Returns:

true if interpretation with given configuration can be done on this namespace

getLowerLevelNamespace

public Namespace getLowerLevelNamespace()

Description copied from interface: Namespace

Returns namespace corresponding to this namespace on lower level.

Returns:

namespace corresponding to this namespace on lower level

getJavaObject

public Object getJavaObject()

Description copied from interface: Namespace

Returns underlying java object if there is some. E.g. for pojo based shared records.

Returns:

underlying java object if there is some

createClosure

public ClosureHolder createClosure(ClosureType closureType,
                                   ClosureExpression closureExpression,
                                   ClosureOrigin origin)

Description copied from interface: HolderFactory

Creates new closure corresponding to given closure expression.

Returns:

new closure

createClosureFromExpression

public ClosureHolder createClosureFromExpression(ClosureType closureType,
                                                 Expression expression,
                                                 ClosureOrigin origin)

Description copied from interface: HolderFactory

Creates new closure from a given expression. The expression is treated as a closure without arguments.

Returns:

new closure from a given expression

createClosure

public ClosureHolder createClosure(ClosureType closureType,
                                   FunctionExpression operationExpression,
                                   ClosureOrigin origin)

Description copied from interface: HolderFactory

Creates new closure corresponding to given operation expression.

Returns:

new closure

createClosure

public ClosureHolder createClosure(ClosureType closureType,
                                   MethodExpression operationExpression,
                                   ClosureOrigin origin)

Description copied from interface: HolderFactory

Creates new closure corresponding to given operation expression.

Returns:

new closure

createReference

public ReferenceHolder createReference(ReferenceType referenceType,
                                       ReferenceExpression referenceExpression,
                                       List<Property> properties,
                                       ClosureOrigin origin)

Description copied from interface: HolderFactory

Returns new reference corresponding to given reference expression.

Returns:

new reference