Package org.rumbledb.expressions.xml

Class ComputedPIConstructorExpression

java.lang.Object

org.rumbledb.expressions.Node

org.rumbledb.expressions.Expression

org.rumbledb.expressions.xml.ComputedPIConstructorExpression

public class ComputedPIConstructorExpression
extends Expression

Expression representing a computed processing instruction constructor. XQuery 3.1, 3.9.3.5: Computed Processing Instruction Constructors. "A computed processing instruction constructor (CompPIConstructor) constructs a new processing instruction node with its own node identity." "If the keyword processing-instruction is followed by an NCName, that NCName is used as the target property of the constructed node. If the keyword processing-instruction is followed by a name expression, the name expression is processed as follows:" Step 1: "Atomization is applied to the value of the name expression. If the result of atomization is not a single atomic value of type xs:NCName, xs:string, or xs:untypedAtomic, a type error is raised [err:XPTY0004]." Step 2: "If the atomized value of the name expression is of type xs:string or xs:untypedAtomic, that value is cast to the type xs:NCName. If the value cannot be cast to xs:NCName, a dynamic error is raised [err:XQDY0041]." Step 3: "The resulting NCName is then used as the target property of the newly constructed processing instruction node. However, a dynamic error is raised if the NCName is equal to "XML" (in any combination of upper and lower case) [err:XQDY0064]." Content Step 1: "Atomization is applied to the value of the content expression, converting it to a sequence of atomic values. (If the content expression is absent, the result of this step is an empty sequence.)" Content Step 2: "If the result of atomization is an empty sequence, it is replaced by a zero-length string. Otherwise, each atomic value in the atomized sequence is cast into a string. If any of the resulting strings contains the string "?>", a dynamic error is raised [err:XQDY0026]." Content Step 3: "The individual strings resulting from the previous step are merged into a single string by concatenating them with a single space character between each pair. Leading whitespace is removed from the resulting string. The resulting string then becomes the content property of the constructed processing instruction node."

See Also:

• XQuery 3.1, 3.9.3.5: Computed Processing Instruction Constructors

Field Summary

Fields inherited from class org.rumbledb.expressions.Expression

expressionClassification, isSequential, staticContext, staticSequenceType

Fields inherited from class org.rumbledb.expressions.Node

highestExecutionMode

Constructor Summary

Constructors

Constructor	Description
ComputedPIConstructorExpression(String target, Expression contentExpression, ExceptionMetadata metadata)	Constructor for static target: processing-instruction NCName { content }
ComputedPIConstructorExpression(Expression nameExpression, Expression contentExpression, ExceptionMetadata metadata)	Constructor for dynamic target: processing-instruction { nameExpression } { content }

Method Summary

Modifier and Type	Method	Description
<T> T	accept(AbstractNodeVisitor<T> visitor, T argument)	Accept method for the visitor pattern.
List<Node>	getChildren()	Returns all children nodes as a list.
Expression	getContentExpression()
Expression	getNameExpression()
String	getTarget()
boolean	hasStaticTarget()
void	serializeToJSONiq(StringBuffer sb, int indent)

Methods inherited from class org.rumbledb.expressions.Expression

alwaysReturnsAtMostOneItem, getExpressionClassification, getStaticContext, getStaticContextForRuntime, getStaticSequenceType, isSequential, isUnset, isUpdating, isUpdatingNonSequential, print, setExpressionClassification, setSequential, setStaticContext, setStaticSequenceType

Methods inherited from class org.rumbledb.expressions.Node

getDescendants, getDescendantsMatching, getHighestExecutionMode, getHighestExecutionMode, getMetadata, indentIt, isContextDependent, numberOfUnsetExecutionModes, setHighestExecutionMode, toString

Methods inherited from class java.lang.Object

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

Constructor Details

ComputedPIConstructorExpression

public ComputedPIConstructorExpression(String target,
 Expression contentExpression,
 ExceptionMetadata metadata)

Constructor for static target: processing-instruction NCName { content }

Parameters:

target - The static processing instruction target

contentExpression - The content expression

metadata - The exception metadata

ComputedPIConstructorExpression

public ComputedPIConstructorExpression(Expression nameExpression,
 Expression contentExpression,
 ExceptionMetadata metadata)

Constructor for dynamic target: processing-instruction { nameExpression } { content }

Parameters:

nameExpression - The dynamic name expression

contentExpression - The content expression

metadata - The exception metadata

Method Details

hasStaticTarget

public boolean hasStaticTarget()

getTarget

public String getTarget()

getNameExpression

public Expression getNameExpression()

getContentExpression

public Expression getContentExpression()

accept

public <T> T accept(AbstractNodeVisitor<T> visitor,
 T argument)

Description copied from class: Node

Accept method for the visitor pattern.

Specified by:

accept in class Node

Type Parameters:

T - the type of the objects returned by the visitor.

Parameters:

visitor - the visitor.

argument - the input from the visitor.

Returns:

the object returned by this visitor

getChildren

public List<Node> getChildren()

Description copied from class: Node

Returns all children nodes as a list. The list is new and can be modified at will by the caller.

Specified by:

getChildren in class Node

Returns:

the children nodes as a list.

serializeToJSONiq

public void serializeToJSONiq(StringBuffer sb,
 int indent)

Specified by:

serializeToJSONiq in class Node