org.exist.xquery.value
Interface Item

All Known Subinterfaces:

NodeValue

All Known Implementing Classes:

AbstractDateTimeValue, AnyURIValue, AtomicValue, AttributeImpl, Base64BinaryDocument, BinaryValue, BinaryValueFromBinaryString, BinaryValueFromFile, BinaryValueFromInputStream, BooleanValue, CDATASectionImpl, CommentImpl, ComputableValue, DateTimeValue, DateValue, DayTimeDurationValue, DecimalValue, DocumentImpl, DoubleValue, DurationValue, ElementImpl, FloatValue, FunctionReference, GDayValue, GMonthDayValue, GMonthValue, GYearMonthValue, GYearValue, IntegerValue, JavaObjectValue, NamespaceNode, NodeImpl, NodeProxy, NumericValue, ProcessingInstructionImpl, QNameValue, ReferenceNode, StringValue, TextImpl, TimeValue, UntypedAtomicValue, YearMonthDurationValue

public interface Item

This class represents an item in a sequence as defined by the XPath 2.0 specification. Every item is either an atomic value or a node.

Method Summary

AtomicValue	atomize()
int	conversionPreference(java.lang.Class<?> javaClass)
AtomicValue	convertTo(int requiredType) Convert this item into an atomic value, whose type corresponds to the specified target type.
void	copyTo(DBBroker broker, DocumentBuilderReceiver receiver)
java.lang.String	getStringValue() Return the string value of this item (see the definition of string value in XPath).
int	getType() Return the type of this item according to the type constants defined in class Type.
void	nodeMoved(NodeId oldNodeId, StoredNode newNode) Nodes may implement this method to be informed of storage address and node id changes after updates.
java.lang.Object	toJavaObject(java.lang.Class<?> target)
void	toSAX(DBBroker broker, org.xml.sax.ContentHandler handler, java.util.Properties properties)
Sequence	toSequence() Convert this item into a sequence, containing only the item.

Method Detail

getType

int getType()

Return the type of this item according to the type constants defined in class Type.

getStringValue

java.lang.String getStringValue()
                                throws XPathException

Return the string value of this item (see the definition of string value in XPath).

Throws:

XPathException

toSequence

Sequence toSequence()

Convert this item into a sequence, containing only the item.

convertTo

AtomicValue convertTo(int requiredType)
                      throws XPathException

Convert this item into an atomic value, whose type corresponds to the specified target type. requiredType should be one of the type constants defined in Type. An XPathException is thrown if the conversion is impossible.

Parameters:

requiredType -

Throws:

XPathException

atomize

AtomicValue atomize()
                    throws XPathException

Throws:

XPathException

toSAX

void toSAX(DBBroker broker,
           org.xml.sax.ContentHandler handler,
           java.util.Properties properties)
           throws org.xml.sax.SAXException

Throws:

org.xml.sax.SAXException

copyTo

void copyTo(DBBroker broker,
            DocumentBuilderReceiver receiver)
            throws org.xml.sax.SAXException

Throws:

org.xml.sax.SAXException

conversionPreference

int conversionPreference(java.lang.Class<?> javaClass)

toJavaObject

java.lang.Object toJavaObject(java.lang.Class<?> target)
                              throws XPathException

Throws:

XPathException

nodeMoved

void nodeMoved(NodeId oldNodeId,
               StoredNode newNode)

Nodes may implement this method to be informed of storage address and node id changes after updates.

Parameters:

oldNodeId -

newNode -

See Also:

UpdateListener