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## net.sf.saxon.functions
Class Document

    java.lang.Object
      net.sf.saxon.expr.Expression
          net.sf.saxon.expr.FunctionCall
              net.sf.saxon.functions.SystemFunction
                  net.sf.saxon.functions.Document

All Implemented Interfaces:
  Serializable, SourceLocator, Container, EvaluableItem, SequenceIterable, XSLTFunction, InstructionInfoProvider

    public class Document

extends SystemFunction
implements XSLTFunction

Implements the XSLT document() function

See Also:
  Serialized Form

Field Summary

Fields inherited from class net.sf.saxon.expr.Expression
`EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD`

Constructor Summary
`Document()`

Method Summary
`void` | `checkArguments(StaticContext env)` Method called during static type checking
`int` | `computeCardinality()` Determine the static cardinality
`int` | `computeSpecialProperties()` Get the static properties of this expression (other than its type).
`SequenceIterator` | `iterate(XPathContext context)` iterate() handles evaluation of the function: it returns a sequence of Document nodes
`static NodeInfo` | `makeDoc(String href, String baseURI, XPathContext c, SourceLocator locator)` Supporting routine to load one external document given a URI (href) and a baseURI
`Expression` | `preEvaluate(StaticContext env)` preEvaluate: this method suppresses compile-time evaluation by doing nothing
`static void` | `sendDoc(String href, String baseURL, XPathContext c, SourceLocator locator, Receiver out)` Supporting routine to push one external document given a URI (href) and a baseURI to a given Receiver.
`void` | `sendDocuments(XPathContext context, Receiver out)` Copy the documents identified by this expression to a given Receiver.

Methods inherited from class net.sf.saxon.functions.SystemFunction
`display, getDetails, getErrorCodeForTypeErrors, getItemType, main, makeSystemFunction, optimize, setDetails`

Methods inherited from class net.sf.saxon.expr.FunctionCall
`getArguments, getDisplayName, getFunctionNameCode, getNumberOfArguments, iterateSubExpressions, promote, replaceSubExpression, setArguments, setFunctionNameCode, simplify, typeCheck`

Methods inherited from class net.sf.saxon.expr.Expression
`adoptChildExpression, checkPermittedContents, computeDependencies, computeStaticProperties, doPromotion, effectiveBooleanValue, evaluateAsString, evaluateItem, getCardinality, getColumnNumber, getContainingProcedure, getDependencies, getExecutable, getHostLanguage, getImplementationMethod, getInstructionInfo, getIntrinsicDependencies, getLineNumber, getLocationId, getLocationProvider, getParentExpression, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, hasBadParentPointer, markTailFunctionCalls, process, resetStaticProperties, setLocationId, setParentExpression, setParentExpression, suppressValidation`

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### Document

    public Document()

Method Detail

### checkArguments

    public void checkArguments(StaticContext env)
                        throws XPathException

  Description copied from class: `SystemFunction`
  Method called during static type checking

  Overrides:
    `checkArguments` in class `SystemFunction`
  Throws:
    `XPathException`

### computeCardinality

    public int computeCardinality()

  Determine the static cardinality

  Overrides:
    `computeCardinality` in class `SystemFunction`

### computeSpecialProperties

    public int computeSpecialProperties()

  Get the static properties of this expression (other than its type). The result is bit-signficant. These properties are used for optimizations. In general, if property bit is set, it is true, but if it is unset, the value is unknown.

  Overrides:
    `computeSpecialProperties` in class `SystemFunction`

### preEvaluate

    public Expression preEvaluate(StaticContext env)

  preEvaluate: this method suppresses compile-time evaluation by doing nothing

  Overrides:
    `preEvaluate` in class `FunctionCall`

### iterate

    public SequenceIterator iterate(XPathContext context)
                             throws XPathException

  iterate() handles evaluation of the function: it returns a sequence of Document nodes

  Specified by:
    `iterate` in interface `SequenceIterable`
  Overrides:
    `iterate` in class `Expression`
  Parameters:
    `context` - supplies the context for evaluation
  Returns:
    a SequenceIterator that can be used to iterate over the result of the expression
  Throws:
    `XPathException` - if any dynamic error occurs evaluating the expression

### makeDoc

    public static NodeInfo makeDoc(String href,
                                   String baseURI,
                                   XPathContext c,
                                   SourceLocator locator)
                            throws XPathException

  Supporting routine to load one external document given a URI (href) and a baseURI

  Throws:
    `XPathException`

### sendDocuments

    public void sendDocuments(XPathContext context,
                              Receiver out)
                       throws XPathException

  Copy the documents identified by this expression to a given Receiver. This method is used only when it is known that the documents are being copied, because there is then no problem about node identity.

  Throws:
    `XPathException`

### sendDoc

    public static void sendDoc(String href,
                               String baseURL,
                               XPathContext c,
                               SourceLocator locator,
                               Receiver out)
                        throws XPathException

  Supporting routine to push one external document given a URI (href) and a baseURI to a given Receiver. This method cannot handle fragment identifiers

  Throws:
    `XPathException`

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Copyright (C) Michael H. Kay. All rights reserved.