com.ihr.xbrl.om.formula.functions
Class XFFunction

java.lang.Object
  net.sf.saxon.expr.Expression
      net.sf.saxon.expr.FunctionCall
          com.ihr.xbrl.om.formula.functions.XFFunction

All Implemented Interfaces:

java.io.Serializable, javax.xml.transform.SourceLocator, net.sf.saxon.event.LocationProvider, net.sf.saxon.event.SaxonLocator, net.sf.saxon.expr.EvaluableItem, net.sf.saxon.expr.SequenceIterable, net.sf.saxon.trace.InstructionInfo, org.xml.sax.Locator

Direct Known Subclasses:

RS_RelativeFilter, XFF_uncovered_aspect, XFI_c_equal, XFI_c_equal_set, XFI_concept_balance, XFI_concept_custom_attribute, XFI_concept_data_type, XFI_concept_data_type_derived_from, XFI_concept_period_type, XFI_concept_substitutions, XFI_context, XFI_context_function, XFI_cu_equal, XFI_decimals, XFI_duplicate_item, XFI_duplicate_tuple, XFI_end_equal, XFI_entity, XFI_entity_identifier, XFI_entity_segment, XFI_fact_dim_container_remainder, XFI_fact_identifier_scheme, XFI_fact_identifier_value, XFI_facts_in_instance, XFI_filter_member_network_selection, XFI_identical_node_set, XFI_identical_nodes, XFI_identifier, XFI_identifier_scheme, XFI_identifier_value, XFI_is_fraction, XFI_is_non_numeric, XFI_is_numeric, XFI_is_period_function, XFI_items_in_instance, XFI_items_in_tuple, XFI_measure_name, XFI_nodes_correspond, XFI_non_nil_facts_in_instance, XFI_p_equal, XFI_pc_equal, XFI_pcu_equal, XFI_period, XFI_precision, XFI_s_equal, XFI_s_equal_set, XFI_scenario, XFI_segment, XFI_start_equal, XFI_tuples_in_instance, XFI_tuples_in_tuple, XFI_u_equal, XFI_u_equal_set, XFI_unit, XFI_unit_function, XFI_v_equal, XFI_v_equal_set, XFI_x_equal

public abstract class XFFunction
extends net.sf.saxon.expr.FunctionCall

Author:

Ignacio

See Also:

Serialized Form

Field Summary

Fields inherited from class net.sf.saxon.expr.Expression

EVALUATE_METHOD, EVENT_FEED_METHOD, ITEM_FEED_METHOD, ITERATE_METHOD, PROCESS_METHOD, PUSH_SELECTION, WATCH_METHOD

Constructor Summary

XFFunction()

Method Summary

net.sf.saxon.expr.PathMap.PathMapNodeSet	addDocToPathMap(net.sf.saxon.expr.PathMap pathMap, net.sf.saxon.expr.PathMap.PathMapNodeSet pathMapNodes) Add a representation of a doc() call or similar function to a PathMap.
void	checkArguments(net.sf.saxon.expr.ExpressionVisitor visitor) Method called during static type checking
int	computeCardinality() Determine the cardinality of the function.
int	computeSpecialProperties() Determine the special properties of this expression.
net.sf.saxon.expr.Expression	copy() Copy an expression.
net.sf.saxon.functions.StandardFunction.Entry	getDetails() Get the details of the function signature
java.lang.String	getErrorCodeForTypeErrors() Return the error code to be used for type errors.
XBRLFormulaProcessor	getFormulaProcessor()
net.sf.saxon.type.ItemType	getItemType(net.sf.saxon.type.TypeHierarchy th) Determine the item type of the value returned by the function
static net.sf.saxon.expr.FunctionCall	makeSystemFunction(java.lang.String name, net.sf.saxon.expr.Expression[] arguments) Make a xfi function call (one in the xfi namespace).
net.sf.saxon.expr.Expression	optimize(net.sf.saxon.expr.ExpressionVisitor visitor, net.sf.saxon.type.ItemType contextItemType) Perform optimisation of an expression and its subexpressions.
void	setDetails(net.sf.saxon.functions.StandardFunction.Entry entry) Set the details of this type of function
void	setFormulaProcessor(XBRLFormulaProcessor fp)

Methods inherited from class net.sf.saxon.expr.FunctionCall

addExternalFunctionCallToPathMap, equals, explain, getArguments, getDisplayName, getExpressionName, getFunctionName, getNumberOfArguments, hashCode, iterateSubExpressions, preEvaluate, promote, replaceSubExpression, setArguments, setFunctionName, simplify, toString, typeCheck

Methods inherited from class net.sf.saxon.expr.Expression

addToPathMap, adoptChildExpression, checkForUpdatingSubexpressions, checkPermittedContents, computeDependencies, computeStaticProperties, doPromotion, effectiveBooleanValue, evaluateAsString, evaluateItem, evaluatePendingUpdates, explain, getCardinality, getColumnNumber, getColumnNumber, getConstructType, getContainer, getDependencies, getEvaluationMethod, getExecutable, getHostLanguage, getImplementationMethod, getIntrinsicDependencies, getLineNumber, getLineNumber, getLocationId, getLocationProvider, getObjectName, getProperties, getProperty, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, getSystemId, hasLoopingSubexpression, implementsStaticTypeCheck, isSubtreeExpression, isUpdatingExpression, isVacuousExpression, iterate, iterateEvents, iterateSameFocusSubExpressions, markTailFunctionCalls, process, setContainer, setEvaluationMethod, setFiltered, setFlattened, setLocationId, staticTypeCheck, suppressValidation

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

XFFunction

public XFFunction()

Method Detail

makeSystemFunction

public static net.sf.saxon.expr.FunctionCall makeSystemFunction(java.lang.String name,
                                                                net.sf.saxon.expr.Expression[] arguments)

Make a xfi function call (one in the xfi namespace).

Parameters:

name - The local name of the function.

arguments - the arguments to the function call

Returns:

a FunctionCall that implements this function, if it exists, or null if the function is unknown.

setDetails

public void setDetails(net.sf.saxon.functions.StandardFunction.Entry entry)

Set the details of this type of function

Parameters:

entry - information giving details of the function signature

setFormulaProcessor

public void setFormulaProcessor(XBRLFormulaProcessor fp)

getFormulaProcessor

public XBRLFormulaProcessor getFormulaProcessor()

getDetails

public net.sf.saxon.functions.StandardFunction.Entry getDetails()

Get the details of the function signature

Returns:

information about the function signature

checkArguments

public void checkArguments(net.sf.saxon.expr.ExpressionVisitor visitor)
                    throws net.sf.saxon.trans.XPathException

Method called during static type checking

Specified by:

checkArguments in class net.sf.saxon.expr.FunctionCall

Throws:

net.sf.saxon.trans.XPathException

optimize

public net.sf.saxon.expr.Expression optimize(net.sf.saxon.expr.ExpressionVisitor visitor,
                                             net.sf.saxon.type.ItemType contextItemType)
                                      throws net.sf.saxon.trans.XPathException

Perform optimisation of an expression and its subexpressions.

This method is called after all references to functions and variables have been resolved to the declaration of the function or variable, and after all type checking has been done.

Overrides:

optimize in class net.sf.saxon.expr.FunctionCall

Parameters:

visitor - an expression visitor

contextItemType - the static type of "." at the point where this expression is invoked. The parameter is set to null if it is known statically that the context item will be undefined. If the type of the context item is not known statically, the argument is set to Type.ITEM_TYPE

Returns:

the original expression, rewritten if appropriate to optimize execution

Throws:

net.sf.saxon.trans.XPathException - if an error is discovered during this phase (typically a type error)

copy

public net.sf.saxon.expr.Expression copy()

Copy an expression. This makes a deep copy.

Specified by:

copy in class net.sf.saxon.expr.Expression

Returns:

the copy of the original expression

getErrorCodeForTypeErrors

public java.lang.String getErrorCodeForTypeErrors()

Return the error code to be used for type errors. This is overridden for functions such as exactly-one(), one-or-more(), ...

Returns:

the error code to be used for type errors in the function call. Normally XPTY0004, but different codes are used for functions such as exactly-one()

getItemType

public net.sf.saxon.type.ItemType getItemType(net.sf.saxon.type.TypeHierarchy th)

Determine the item type of the value returned by the function

Specified by:

getItemType in class net.sf.saxon.expr.Expression

Parameters:

th - the type hierarchy cache

computeCardinality

public int computeCardinality()

Determine the cardinality of the function.

Specified by:

computeCardinality in class net.sf.saxon.expr.Expression

computeSpecialProperties

public int computeSpecialProperties()

Determine the special properties of this expression. The general rule is that a system function call is non-creative if its return type is atomic, or if all its arguments are non-creative. This is overridden for the generate-id() function, which is considered creative if its operand is creative (because the result depends on the identity of the operand)

Overrides:

computeSpecialProperties in class net.sf.saxon.expr.Expression

addDocToPathMap

public net.sf.saxon.expr.PathMap.PathMapNodeSet addDocToPathMap(net.sf.saxon.expr.PathMap pathMap,
                                                                net.sf.saxon.expr.PathMap.PathMapNodeSet pathMapNodes)

Add a representation of a doc() call or similar function to a PathMap. This is a convenience method called by the addToPathMap() methods for doc(), document(), collection() and similar functions. These all create a new root expression in the path map.

Parameters:

pathMap - the PathMap to which the expression should be added

pathMapNodes - the node in the PathMap representing the focus at the point where this expression is called. Set to null if this expression appears at the top level.

Returns:

the pathMapNode representing the focus established by this expression, in the case where this expression is the first operand of a path expression or filter expression