io::zorba::api::xqj::ZorbaXQResultSequence

This class represents a sequence of items obtained as a result of evaluation XQuery expressions. The result sequence is tied to the XQconnection object on which the expression was evaluated.This sequence can be obtained by performing an executeQuery on the expression object. It represents a cursor-like class.The ZorbaXQResultSequence object is dependent on the connection and the expression from which it was created and is only valid for the duration of those objects. Thus, if any one of those objects is closed, this ZorbaXQResultSequence object will be implicitly closed and it can no longer be used. Similarly re-executing the expression also implicitly closes the associated result sequences.An XQJ driver is not required to provide finalizer methods for the connection and other objects. Hence it is strongly recommended that users call close method explicitly to free any resources. It is also recommended that they do so under a final block to ensure that the object is closed even when there are exceptions. Not closing this object implicitly or explicitly might result in serious memory leaks.When the ZorbaXQResultSequence is closed any ZorbaXQResultItem objects obtained from it are also implicitly closed.Example -
 {.java} 
   XQPreparedExpression expr = conn.prepareExpression("for $i ..");
   ZorbaXQResultSequence result = expr.executeQuery();
  
   // create the ItemTypes for string and integer
   XQItemType strType = conn.createAtomicType(XQItemType.XQBASETYPE_STRING);
   XQItemType intType = conn.createAtomicType(XQItemType.XQBASETYPE_INT);
 
   // posititioned before the first item
   while (result.next())
   {
     XQItemType type = result.getItemType();
  
     // If string, then get the string value out
     if (type.equals(strType))
       String str = result.getAtomicValue();
     else if (type.equals(intType))  // if it is an integer..
       int intval = result.getInt();
       ...
   }
  
   result.close(); // explicitly close the result sequence

Public Functions

boolean

absolute(int i)

Moves the XQSequence's position to the given item number in this object.

void

afterLast()

Move to the position after the last item.

void

beforeFirst()

Moves to the position before the first item.

void

close()

Closes the sequence and frees all resources associated with this sequence.

int

count()

Returns a number indicating the number of items in the sequence.

boolean

first()

Moves to the first item in the sequence.

String

getAtomicValue()

Gets the current item as a Java String.

boolean

getBoolean()

Gets the current item as a boolean.

byte

getByte()

Gets the current item as a byte.

XQConnection

getConnection()

Gets the XQuery connection associated with this result sequence.

double

getDouble()

Gets the current item as a double.

float

getFloat()

Gets the current item as a float.

int

getInt()

Gets the current item as an int.

XQItem

getItem()

Get the current item as an immutable XQItem object.

XMLStreamReader

getItemAsStream()

Read the current item as an XMLStreamReader object.

String

getItemAsString(Properties prprts)

Serializes the current item according to the XSLT 2.0 and XQuery 1.0 serialization.

XQItemType

getItemType()

Gets the type of the item.

long

getLong()

Gets the current item as a long.

Node

getNode()

Gets the item as a DOM node.

URI

getNodeUri()

Returns the URI for this item.

Object

getObject()

Gets the current item as an Object.

int

getPosition()

Gets the current cursor position.

XMLStreamReader

getSequenceAsStream()

Read the entire sequence starting from the current position as an XMLStreamReader object.

String

getSequenceAsString(Properties prprts)

Serializes the sequence starting from the current position to a String.

short

getShort()

Gets the current item as a short.

ZorbaXQStaticCollectionManager

getStaticCollectionManager()

Returns a StaticCollectionManager.

boolean

instanceOf(XQItemType xqit)

Checks if the item "matches" an item type.

boolean

isAfterLast()

Checks if the current position is after the last item in the sequence.

boolean

isBeforeFirst()

Checks if the current position before the first item in the sequence.

boolean

isClosed()

Checks if the sequence is closed.

boolean

isFirst()

Checks if the current position at the first item in the sequence.

boolean

isLast()

Checks if the current position at the last item in the sequence.

boolean

isOnItem()

Check if the sequence is positioned on an item or not.

boolean

isScrollable()

Checks if the sequence is scrollable.

boolean

last()

Moves to the last item in the sequence.

boolean

next()

Moves to the next item in the sequence.

boolean

previous()

Moves to the previous item in the sequence.

boolean

relative(int i)

Moves the cursor a relative number of items.

void

writeItem(OutputStream out, Properties prprts)

Serializes the current item to a Writer.

void

writeItem(Writer writer, Properties prprts)

Serializes the current item to a Writer.

void

writeItemToResult(Result result)

Writes the current item to a Result.

void

writeItemToSAX(ContentHandler ch)

Writes the current item to a SAX handler.

void

writeSequence(OutputStream out, Properties prprts)

Serializes the sequence starting from the current position to an OutputStream.

void

writeSequence(Writer writer, Properties prprts)

Serializes the sequence starting from the current position to a Writer.

void

writeSequenceToResult(Result result)

Writes the entire sequence starting from the current position to a Result.

void

writeSequenceToSAX(ContentHandler ch)

Writes the entire sequence starting from the current position to a SAX handler.

ZorbaXQResultSequence(XQConnection conn, io.zorba.api.XQuery query, boolean prepared)

Private Attributes

closed

boolean closed

connection

XQConnection connection

consumedItem

boolean consumedItem

current

delivered

boolean delivered

items

Collection< ZorbaXQResultItem > items

iter

Iterator iter

iterDeleted

boolean iterDeleted

lQuery

io.zorba.api.XQuery lQuery

lStaticCollectionManager

ZorbaXQStaticCollectionManager lStaticCollectionManager

preparedExpression

boolean preparedExpression

Public Functions

absolute

boolean absolute(int i)

Moves the XQSequence's position to the given item number in this object.

If the item number is positive, the XQSequence moves to the given item number with respect to the beginning of the XQSequence. The first item is item 1, the second is item 2, and so on.If the given item number is negative, the XQSequence positions itself on an absolute item position with respect to the end of the sequence.For example, calling the method absolute(-1) positions the XQSequence on the last item; calling the method absolute(-2) moves the XQSequence to the next-to-last item, and so on. absolute(0) will position the sequence before the first item.An attempt to position the sequence beyond the first/last item set leaves the current position to be before the first item or after the last item.Calling this method on an empty sequence will return false.

Parameters

i - the item position to jump to

Returns

true if the current position is within the sequence, false otherwise

Parameters

XQException - if (1) the sequence is forward only, or (2) the sequence is in a closed state

afterLast

void afterLast()

Move to the position after the last item.

Parameters

XQException - if (1) the sequence is forward only, or (2) the sequence is in a closed state

beforeFirst

void beforeFirst()

Moves to the position before the first item.

Parameters

XQException - if (1) the sequence is forward only, or (2) the sequence is in a closed state

close

void close()

Closes the sequence and frees all resources associated with this sequence.

Closing an XQSequence object also implicitly closes all XQItem objects obtained from it. All methods other than the isClosed or close method will raise exceptions when invoked after closing the sequence. Calling close on an XQSequence object that is already closed has no effect.

Parameters

XQException - if there are errors during closing of the sequence

count

int count()

Returns a number indicating the number of items in the sequence.

Returns

the number of items in this sequence

Parameters

XQException - if (1) the sequence is forward-only, or (2) the sequence is closed

first

boolean first()

Moves to the first item in the sequence.

The method returns true, if it was able to move to the first item in the sequence false, otherwise. Calling this method on an empty sequence will return false.

Returns

true if the sequence was positioned on the first item, false otherwise

Parameters

XQException - if (1) the sequence is forward only, or (2) the sequence is in a closed state

getAtomicValue

String getAtomicValue()

Gets the current item as a Java String.

The current item must be an atomic value. This function casts the current item to an xs:string value according to the casting rules defined in 17.1.2 Casting to xs:string and xs:untypedAtomic, XQuery 1.0 and XPath 2.0 Functions and Operators, and then returns the value as a Java String.

Returns

the string representation of the item

Parameters

XQException - if (1) there are errors accessing the item's value, (2) the item is not an atomic value, (3) there is an error when casting the item to a string representation, (4) the underlying sequence or item is in a closed state, or (5) in the case of forward only sequences, a get or write method was already invoked on the current item

getBoolean

boolean getBoolean()

Gets the current item as a boolean.

The current item must be an atomic value of type xs:boolean or a subtype.

Returns

a boolean representing the current item

Parameters

XQException - if (1) the conversion of the current item to a boolean fails, (2) if there are errors accessing the current item, (3) if the underlying sequence or item is in a closed state, or (4) in the case of forward only sequences, a get or write method was already invoked on the current item

getByte

byte getByte()

Gets the current item as a byte.

The current item must be an atomic value of type xs:decimal or a subtype, and its value must be in the value space of byte.

Returns

a byte representing the current item

Parameters

XQException - if (1) the conversion of the current item to a byte fails, (2) if there are errors accessing the current item, (3) if the underlying sequence or item is in a closed state, or (4) in the case of forward only sequences, a get or write method was already invoked on the current item

getConnection

XQConnection getConnection()

Gets the XQuery connection associated with this result sequence.

Returns

the connection associated with this result sequence

Parameters

XQException - if the result sequence is in a closed state

getDouble

double getDouble()

Gets the current item as a double.

The current item must be an atomic value of type xs:double or a subtype.

Returns

a double representing the current item

Parameters

XQException - if (1) the conversion of the current item to a double fails, (2) if there are errors accessing the current item, (3) if the underlying sequence or item is in a closed state, or (4) in the case of forward only sequences, a get or write method was already invoked on the current item

getFloat

float getFloat()

Gets the current item as a float.

The current item must be an atomic value of type xs:float or a subtype.

Returns

a float representing the current item

Parameters

XQException - if (1) the conversion of the current item to a float fails, (2) if there are errors accessing the current item, (3) if the underlying sequence or item is in a closed state, or (4) in the case of forward only sequences, a get or write method was already invoked on the current item

getInt

int getInt()

Gets the current item as an int.

The current item must be an atomic value of type xs:decimal or a subtype, and its value must be in the value space of int.

Returns

an int representing the current item

Parameters

XQException - if (1) the conversion of the current item to a int fails, (2) if there are errors accessing the current item, (3) if the underlying sequence or item is in a closed state, or (4) in the case of forward only sequences, a get or write method was already invoked on the current item

getItem

XQItem getItem()

Get the current item as an immutable XQItem object.

In case of an ZorbaXQResultSequence, the item is an ZorbaXQResultItem. In the case of forward only sequences, this method or any other get or write method may only be called once on the curent item.The XQItem object is dependent on the sequence from which it was created and is only valid for the duration of XQSequence lifetime. Thus, the XQSequence is closed, this XQItem object will be implicitly closed and it can no longer be used.

Returns

an XQItem object

Parameters

XQException - if (1) there are errors retrieving the item, or (2) in the case of a forward only sequence, a get or write method has already been invoked on the current item.

getItemAsStream

XMLStreamReader getItemAsStream()

Read the current item as an XMLStreamReader object.

Read the current item as an XMLStreamReader object, as described in Section 12.1 Serializing an XDM instance into a StAX event stream (XMLStreamReader), XQuery API for Java (XQJ) 1.0. Note that the serialization process might fail, in which case a XQException is thrown. While the stream is being read, the application MUST NOT do any other concurrent operations on the underlying item or sequence. The operation on the stream is undefined if the underlying sequence is repositioned or the state of the underlying item or sequence is changed by concurrent operations.

Returns

an XML reader object as XMLStreamReader

Parameters

XQException - if (1) there are errors accessing the current item or the underlying sequence, (2) the underlying sequence or item is in a closed state, (3) in the case of a forward only sequence, a get or write method has already been invoked on the current item, or (4) in case of an error during serialization of the current item into a StAX event stream as defined in Section 12.1 Serializing an XDM instance into a StAX event stream (XMLStreamReader), XQuery API for Java (XQJ) 1.0

getItemAsString

String getItemAsString(Properties prprts)

Serializes the current item according to the XSLT 2.0 and XQuery 1.0 serialization.

Serialization parameters, which influence how serialization is performed, can be specified. Refer to the XSLT 2.0 and XQuery 1.0 serialization and Section 12 Serialization, XQuery API for Java (XQJ) 1.0 for more information.

Parameters

prprts - specifies the serialization parameters, null is considered equivalent to an empty Properties object

Returns

the serialized representation of the item

Parameters

XQException - if (1) there are errors accessing the current item or the underlying sequence, (2) the underlying sequence or item is in a closed state, (3) in the case of a forward only sequence, a get or write method has already been invoked on the current item, or (4) if there are errors during serialization

getItemType

XQItemType getItemType()

Gets the type of the item.

On a forward only sequence this method can be called independent of any other get or write method. It will not raise an error if such method has been called already, nor will it affect subsequent invocations of any other get or write method.

Returns

the type of the item

Parameters

XQException - if (1) there are errors accessing the type of the item, or (2) the underlying sequence or item is in a closed state

getLong

long getLong()

Gets the current item as a long.

The current item must be an atomic value of type xs:decimal or a subtype, and its value must be in the value space of long.

Returns

a long representing the current item

Parameters

XQException - if (1) the conversion of the current item to a long fails, (2) if there are errors accessing the current item, (3) if the underlying sequence or item is in a closed state, or (4) in the case of forward only sequences, a get or write method was already invoked on the current item

getNode

Node getNode()

Gets the item as a DOM node.

The current item must be a node. The type of the returned DOM node is governed by Table 7 - XQuery Node Types and Corresponding Java Object Types XQuery API for Java (XQJ) 1.0 The instance of the returned node is implementation dependent. The node may be a reference or a copy of the internal state of the item. It is advisable to make a copy of the node if the application plans to modify it.

Returns

a DOM node representing the current item

Parameters

XQException - if (1) if there are errors accessing the current item, (2) the current item is not a node, (3) if the underlying sequence or item is in a closed state, or (4) in the case of forward only sequences, a get or write method was already invoked on the current item

getNodeUri

URI getNodeUri()

Returns the URI for this item.

If the item is a document node, then this method returns the absolute URI of the resource from which the document node was constructed. If the document URI is not available, then the empty string is returned. If the document URI is available, the returned value is the same as if fn:document-uri were evaluated on this document node. If the item is of a node kind other than document node, then the returned URI is implementation-defined. On a forward only sequence this method can be called independent of any other get or write method. It will not raise an error if such method has been called already, nor will it affect subsequent invocations of any other get or write method on the current item.

Returns

the document URI for this document node or the empty string if not available. For other node kinds, the result is implementation-defined

Parameters

XQException - if (1) if there are errors accessing the current item, (2) the current item is not a node, (3) if the underlying sequence or item is in a closed state

getObject

Object getObject()

Gets the current item as an Object.

The data type of the returned object will be the Java Object type as specified in 14.4 Mapping an XQuery Atomic Value to a Java Object Type and 14.5 Mapping an XQuery Node to a Java Object Type, XQuery API for Java (XQJ) 1.0.

Returns

an object representing the current item

Parameters

XQException - if (1) if there are errors accessing the current item, (2) if the underlying sequence or item is in a closed state, or (3) in the case of forward only sequences, a get or write method was already invoked on the current item

getPosition

int getPosition()

Gets the current cursor position.

0 indicates that the position is before the first item and count() + 1 indicates position after the last item. A specific position indicates that the cursor is positioned on the item at that position. Use the isOnItem method to verify if the cursor is positioned on the item.Calling this method on an empty sequence will return 0.

Parameters

XQException - if (1) the sequence is forward-only, or (2) the sequence is closed

getSequenceAsStream

XMLStreamReader getSequenceAsStream()

Read the entire sequence starting from the current position as an XMLStreamReader object.

Read the entire sequence starting from the current position as an XMLStreamReader object, as described in Section 12.1 Serializing an XDM instance into a StAX event stream (XMLStreamReader), XQuery API for Java (XQJ) 1.0. Note that the serialization process might fail, in which case a XQException is thrown. While the stream is being read, the application MUST NOT do any other concurrent operations on the sequence. The operation on the stream is undefined if the underlying sequence position or state is changed by concurrent operations. After all items are written to the stream, the current position of the cursor is set to point after the last item. Also, in the case of forward only sequences, this method may only be called if the current item has not yet been read through any of the get or write methods.

Returns

an XML reader object as XMLStreamReader

Parameters

XQException - if (1) there are errors accessing any of the items in the sequence, (2) the sequence is in a closed state, (3) in the case of a forward only sequence, a get or write method has already been invoked on the current item, or (4) in case of an error during serialization of the sequence into a StAX event stream as defined in Section 12.1 Serializing an XDM instance into a StAX event stream (XMLStreamReader), XQuery API for Java (XQJ) 1.0

getSequenceAsString

String getSequenceAsString(Properties prprts)

Serializes the sequence starting from the current position to a String.

Serializes the sequence starting from the current position to a String according to the XSLT 2.0 and XQuery 1.0 serialization. Serialization parameters, which influence how serialization is performed, can be specified. Refer to the XSLT 2.0 and XQuery 1.0 serialization and Section 12 Serialization, XQuery API for Java (XQJ) 1.0 for more information. Reading the sequence during the serialization process performs implicit next operations to read the items. After all items are written to the stream, the current position of the cursor is set to point after the last item. Also, in the case of forward only sequences, this method may only be called if the current item has not yet been read through any of the get or write methods.

Parameters

prprts - specifies the serialization parameters, null is considered equivalent to an empty Properties object

Returns

the serialized representation of the sequence

Parameters

XQException - if (1) there are errors accessing the items in the sequence, (2) there are errors during serialization, (3) the sequence is in a closed state, or (4) in the case of a forward only sequence, a get or write method has already been invoked on the current item

getShort

short getShort()

Gets the current item as a short.

The current item must be an atomic value of type xs:decimal or a subtype, and its value must be in the value space of short.

Returns

a short representing the current item

Parameters

XQException - if (1) the conversion of the current item to a short fails, (2) if there are errors accessing the current item, (3) if the underlying sequence or item is in a closed state, or (4) in the case of forward only sequences, a get or write method was already invoked on the current item

getStaticCollectionManager

ZorbaXQStaticCollectionManager getStaticCollectionManager()

Returns a StaticCollectionManager.

Returns a CollectionManager responsible for all collections which are statically declared in the static context of this query (main module) or any transitively imported library module. The collection manager provides a set of functions for managing collections and their contents.

Returns

ZorbaXQStaticCollectionManager The collection manager responsible for managing collections of this Sequence.

Parameters

XQException - if the object is closed

instanceOf

boolean instanceOf(XQItemType xqit)

Checks if the item "matches" an item type.

Checks if the item "matches" an item type, as defined in 2.5.4.2 Matching an Item Type and an Item, XQuery 1.0: An XML Query Language. You can use this method to first check the type of the result before calling the specific get methods.Example -

 {.java}
   ...
   XQItemType strType = conn.createAtomicType(XQItemType.XQBASETYPE_STRING);
   XQItemType nodeType = conn.createNodeType();
 
   XQSequence result = preparedExpr.executeQuery();
   while (result.next())
   {
      // Generic check for node.. 
      if (result.instanceOf(nodeType))
         org.w3.dom.Node node = result.getNode();
      else if (result.instanceOf(strType))
         String str = result.getAtomicValue();
    }
  
 
 If either the type of the XQItemAccessor or the input XQItemType is not a built-in type, then this method is allowed to raise exception if it can NOT determine the instanceOf relationship due to the lack of the access of the XML schema that defines the user defined schema types if the XQMetaData.isUserDefinedXMLSchemaTypeSupported() method returns false. 
 Otherwise, this method must determine if the type of the XQItemAccessor is an instance of the input XQItemType. Note even if isUserDefinedXMLSchemaTypeSupported() returns false, an XQJ implementation may still be able to determine the instanceOf relationship for certain cases involving user defined schema type. For example, if the type of an XQItemAccessor is of mySchema:hatSize sequence type and the input parameter XQItemType is of item() sequence type, the return value for instanceOf relationship should always be true even though the XQJ implementation does not know the precise type information of mySchema:hatSize type defined in XML schema 'mySchema'.

Parameters

xqit - item type to match

Returns

true if this item matches the input item type as defined in 2.5.4.2 Matching an Item Type and an Item, XQuery 1.0: An XML Query Language, and false if it does not

Parameters

XQException - if (1) there are errors accessing the item's type, (2) if the underlying sequence or item is in a closed state, (3) if the implementation is unable to determine the schema definition of a user defined schema type, or (4) the type parameter is null

isAfterLast

boolean isAfterLast()

Checks if the current position is after the last item in the sequence.

Calling this method on an empty sequence will return false.

Returns

true if the current position is after the last item, false otherwise

Parameters

XQException - if (1) the sequence is forward only, or (2) the sequence is in a closed state

isBeforeFirst

boolean isBeforeFirst()

Checks if the current position before the first item in the sequence.

Calling this method on an empty sequence will return false.

Returns

true if the current position is before the first item, false otherwise

Parameters

XQException - if (1) the sequence is forward only, or (2) the sequence is in a closed state

isClosed

boolean isClosed()

Checks if the sequence is closed.

Returns

true if the sequence is in a closed state, false otherwise

isFirst

boolean isFirst()

Checks if the current position at the first item in the sequence.

Calling this method on an empty sequence will return false.

Returns

true if the current position is at the first item, false otherwise

Parameters

XQException - if (1) the sequence is forward only, or (2) the sequence is in a closed state

isLast

boolean isLast()

Checks if the current position at the last item in the sequence.

Calling this method on an empty sequence will return false.

Returns

true if the current position is at the last item, false otherwise

Parameters

XQException - if (1) the sequence is forward only, or (2) the sequence is in a closed state

isOnItem

boolean isOnItem()

Check if the sequence is positioned on an item or not.

Calling this method on an empty sequence will return false.

Returns

true if the sequence is currently positioned on an item, false if sequence is positioned before the first item, or after the last item

Parameters

XQException - if the sequence is in a closed state

isScrollable

boolean isScrollable()

Checks if the sequence is scrollable.

Returns

true if the sequence can be scrolled backward or forward, false otherwise

Parameters

XQException - if the sequence is in a closed state

last

boolean last()

Moves to the last item in the sequence.

This method returns true, if it was able to move to the last item in the sequence false, otherwise. Calling this method on an empty sequence will return false.

Returns

true if the sequence was positioned on the last item, false otherwise

Parameters

XQException - if (1) the sequence is forward only, or (2) the sequence is in a closed state

next

boolean next()

Moves to the next item in the sequence.

Calling this method on an empty sequence will return false.

Returns

true if the new item is valid, false if there are no more items

Parameters

XQException - if the sequence is in a closed state

previous

boolean previous()

Moves to the previous item in the sequence.

Calling this method on an empty sequence will return false.

Returns

true if the new current position is within the sequence, (i.e., not before first); false otherwise.

Parameters

XQException - if (1) the sequence is forward only, or (2) the sequence is in a closed state.

relative

boolean relative(int i)

Moves the cursor a relative number of items.

Moves the cursor a relative number of items, either positive or negative. Attempting to move beyond the first/last item in the sequence positions the sequence before/after the the first/last item. Calling relative(0) is valid, but does not change the cursor position. Note: Calling the method relative(1) is identical to calling the method next and calling the method relative(-1) is identical to calling the method previous(). Calling this method on an empty sequence will return false.

Parameters

i - the item position to jump to

Returns

true if the new current position is within the sequence (i.e., not before first or after last); false otherwise.

Parameters

XQException - if (1) the sequence is forward only, or (2) the sequence is in a closed state.

writeItem

void writeItem(OutputStream out, Properties prprts)

Serializes the current item to a Writer.

Serializes the current item to a Writer according to XSLT 2.0 and XQuery 1.0 serialization. Serialization parameters, which influence how serialization is performed, can be specified. Refer to the XSLT 2.0 and XQuery 1.0 serialization and Section 12 Serialization, XQuery API for Java (XQJ) 1.0 for more information.

Parameters

out - the output stream into which the current item is to be serialized
prprts - specifies the serialization parameters, null is considered equivalent to an empty Properties object

Parameters

XQException - if (1) there are errors accessing the current item or the underlying sequence, (2) the underlying sequence or item is in a closed state, (3) in the case of a forward only sequence, a get or write method has already been invoked on the current item, (4) if there are errors during serialization, or (5) the os parameter is null

writeItem

void writeItem(Writer writer, Properties prprts)

Serializes the current item to a Writer.

Serializes the current item to a Writer according to XSLT 2.0 and XQuery 1.0 serialization. Serialization parameters, which influence how serialization is performed, can be specified. Refer to the XSLT 2.0 and XQuery 1.0 serialization and Section 12 Serialization, XQuery API for Java (XQJ) 1.0 for more information.Warning: When outputting to a Writer, make sure the writer's encoding matches the encoding parameter if specified as a property or the default encoding.

Parameters

writer - the output stream into which the current item is to be serialized
prprts - specifies the serialization parameters, null is considered equivalent to an empty Properties object

Parameters

XQException - if (1) there are errors accessing the current item or the underlying sequence, (2) the underlying sequence or item is in a closed state, (3) in the case of a forward only sequence, a get or write method has already been invoked on the current item, (4) if there are errors during serialization, or (5) the os parameter is null

writeItemToResult

void writeItemToResult(Result result)

Writes the current item to a Result.

First the item is normalized as described in XSLT 2.0 and XQuery 1.0 serialization. Subsequently it is serialized to the Result object. Note that the normalization process can fail, in which case an XQException is thrown. An XQJ implementation must at least support the following implementations:

  • javax.xml.transform.dom.DOMResult
  • javax.xml.transform.sax.SAXResult
  • javax.xml.transform.stream.StreamResult

Parameters

result - the result object into which the item is to be serialized

Parameters

XQException - if (1) there are errors accessing the current item or the underlying sequence, (2) the underlying sequence or item is in a closed state, (3) in the case of a forward only sequence, a get or write method has already been invoked on the current item, (4) in case of an error while serializing the current item into the Result object, or (5) the result parameter is null

writeItemToSAX

void writeItemToSAX(ContentHandler ch)

Writes the current item to a SAX handler.

Writes the current item to a SAX handler, as described in in Section 12.2 Serializing an XDM instance into a SAX event stream, XQuery API for Java (XQJ) 1.0. Note that the serialization process might fail, in which case a XQException is thrown. The specified org.xml.sax.ContentHandler can optionally implement the org.xml.sax.LexicalHandler interface. An implementation must check if the specified ContentHandler implements LexicalHandler. If the handler is a LexicalHandler comment nodes are reported, otherwise they will be silently ignored.

Parameters

ch - the SAX content handler, optionally a lexical handler

Parameters

XQException - if (1) there are errors accessing the current item or the underlying sequence, (2) the underlying sequence or item is in a closed state, (3) in the case of a forward only sequence, a get or write method has already been invoked on the current item, (4) in case of an error while serializing the XDM instance into a SAX event stream, or (5) the saxhdlr parameter is null

writeSequence

void writeSequence(OutputStream out, Properties prprts)

Serializes the sequence starting from the current position to an OutputStream.

Serializes the sequence starting from the current position to an OutputStream according to the XSLT 2.0 and XQuery 1.0 serialization. Serialization parameters, which influence how serialization is performed, can be specified. Refer to the XSLT 2.0 and XQuery 1.0 serialization and Section 12 Serialization, XQuery API for Java (XQJ) 1.0 for more information. Reading the sequence during the serialization process performs implicit next operations to read the items. After all items are written to the stream, the current position of the cursor is set to point after the last item. Also, in the case of forward only sequences, this method may only be called if the current item has not yet been read through any of the get or write methods.

Parameters

out - the output stream into which the sequence is to be serialized
prprts - specifies the serialization parameters, null is considered equivalent to an empty Properties object

Parameters

XQException - if (1) there are errors accessing the items in the sequence, (2) there are errors during serialization, (3) the sequence is in a closed state, (4) in the case of a forward only sequence, a get or write method has already been invoked on the current item, or (5) the os parameter is null

writeSequence

void writeSequence(Writer writer, Properties prprts)

Serializes the sequence starting from the current position to a Writer.

Serializes the sequence starting from the current position to a Writer according to the XSLT 2.0 and XQuery 1.0 serialization. Serialization parameters, which influence how serialization is performed, can be specified. Refer to the XSLT 2.0 and XQuery 1.0 serialization and Section 12 Serialization, XQuery API for Java (XQJ) 1.0 for more information.Warning: When outputting to a Writer, make sure the writer's encoding matches the encoding parameter if specified as a property or the default encoding.Reading the sequence during the serialization process performs implicit next operations to read the items. After all items are written to the stream, the current position of the cursor is set to point after the last item. Also, in the case of forward only sequences, this method may only be called if the current item has not yet been read through any of the get or write methods.

Parameters

writer - the writer object into which the sequence is to be serialized
prprts - specifies the serialization parameters, null is considered equivalent to an empty Properties object

Parameters

XQException - if (1) there are errors accessing the items in the sequence, (2) there are errors during serialization, (3) the sequence is in a closed state, (4) in the case of a forward only sequence, a get or write method has already been invoked on the current item, or (5) the ow parameter is null

writeSequenceToResult

void writeSequenceToResult(Result result)

Writes the entire sequence starting from the current position to a Result.

First the sequence is normalized as described in XSLT 2.0 and XQuery 1.0 serialization. Subsequently it is serialized to the Result object. Note that the normalization process can fail, in which case an XQException is thrown. An XQJ implementation must at least support the following implementations:

  • javax.xml.transform.dom.DOMResult
  • javax.xml.transform.sax.SAXResult
  • javax.xml.transform.stream.StreamResult

Parameters

result - the result object into which the sequence is to be serialized

Parameters

XQException - if (1) there are errors accessing any of the items in the sequence, (2) the sequence is in a closed state, (3) in the case of a forward only sequence, a get or write method has already been invoked on the current item, (4) in case of an error while serializing the sequence into the Result object, or (5) the result parameter is null

writeSequenceToSAX

void writeSequenceToSAX(ContentHandler ch)

Writes the entire sequence starting from the current position to a SAX handler.

Writes the entire sequence starting from the current position to a SAX handler, as described in Section 12.2 Serializing an XDM instance into a SAX event stream, XQuery API for Java (XQJ) 1.0. Note that the serialization process might fail, in which case a XQException is thrown. After all items are written to the stream, the current position of the cursor is set to point after the last item. Also, in the case of forward only sequences, this method may only be called if the current item has not yet been read through any of the get or write methods. The specified org.xml.sax.ContentHandler can optionally implement the org.xml.sax.LexicalHandler interface. An implementation must check if the specified ContentHandler implements LexicalHandler. If the handler is a LexicalHandler comment nodes are reported, otherwise they will be silently ignored.

Parameters

ch - the SAX content handler, optionally a lexical handler

Parameters

XQException - if (1) there are errors accessing any of the items in the sequence, (2) the sequence is in a closed state, (3) in the case of a forward only sequence, a get or write method has already been invoked on the current item, (4) in case of an error during serializing the XDM instance into a SAX event stream, or (5) the saxhdlr parameter is null

ZorbaXQResultSequence

 ZorbaXQResultSequence(XQConnection conn, io.zorba.api.XQuery query, boolean prepared)

Private Functions

isClosedXQException

void isClosedXQException()

isConsumedXQException

void isConsumedXQException()

isItemDeliveredXQException

void isItemDeliveredXQException()

isNullXQException

void isNullXQException(Object value)

isOnItemXQException

void isOnItemXQException()