Class TextFragmentValue

java.lang.Object
com.icl.saxon.expr.Expression
com.icl.saxon.expr.Value
com.icl.saxon.expr.NodeSetValue
com.icl.saxon.expr.SingletonNodeSet
com.icl.saxon.expr.TextFragmentValue
All Implemented Interfaces:
NodeList
public final class TextFragmentValue extends SingletonNodeSet
This class represents a Value of type result tree fragment, specifically, an RTF whose root owns a single text node.

  • Constructor Details

    • TextFragmentValue

      public TextFragmentValue(String value, String systemId, Controller controller)
      Constructor: create a result tree fragment containing a single text node
      Parameters:
      value - : a String containing the value

  • Method Details

    • asString

      public String asString()
      Convert the result tree fragment to a string.
      Overrides:
      asString in class SingletonNodeSet
      Returns:
      the value of the first node in the node-set if there is one, otherwise an empty string

    • outputStringValue

      public void outputStringValue(Outputter out, Context context) throws TransformerException
      Evaluate an expression as a String and write the result to the specified outputter.
      Overrides:
      outputStringValue in class Expression
      Parameters:
      out - The required outputter
      context - The context in which the expression is to be evaluated
      Throws:
      TransformerException

    • asNumber

      public double asNumber()
      Convert the result tree fragment to a number
      Overrides:
      asNumber in class NodeSetValue
      Returns:
      the number obtained by evaluating as a String and converting the string to a number

    • asBoolean

      public boolean asBoolean()
      Convert the result tree fragment to a boolean
      Overrides:
      asBoolean in class SingletonNodeSet
      Returns:
      true if the node set is not empty

    • getCount

      public int getCount()
      Count the nodes in the node-set.
      Overrides:
      getCount in class SingletonNodeSet

    • simplify

      public Expression simplify()
      Simplify the expression
      Overrides:
      simplify in class SingletonNodeSet
      Returns:
      the simplified expression

    • getFirst

      public NodeInfo getFirst()
      Get the first node in the nodeset (in document order)
      Overrides:
      getFirst in class SingletonNodeSet
      Returns:
      the first node

    • enumerate

      public NodeEnumeration enumerate() throws XPathException
      Return an enumeration of this nodeset value.
      Overrides:
      enumerate in class SingletonNodeSet
      Throws:
      XPathException

    • equals

      public boolean equals(Value other) throws XPathException
      Test whether a nodeset "equals" another Value
      Overrides:
      equals in class SingletonNodeSet
      Returns:
      a boolean giving the value of the expression, evaluated in the current context
      Throws:
      XPathException

    • notEquals

      public boolean notEquals(Value other) throws XPathException
      Test whether a nodeset "not-equals" another Value
      Overrides:
      notEquals in class SingletonNodeSet
      Returns:
      a boolean giving the value of the expression, evaluated in the current context
      Throws:
      XPathException

    • compare

      public boolean compare(int operator, Value other) throws XPathException
      Test how a FragmentValue compares to another Value under a relational comparison.
      Overrides:
      compare in class NodeSetValue
      Parameters:
      operator - The comparison operator, one of Tokenizer.LE, Tokenizer.LT, Tokenizer.GE, Tokenizer.GT,
      Throws:
      XPathException

    • getType

      public int getType()
      Return the type of the value
      Returns:
      Value.NODESET (always)

    • getDataType

      public int getDataType()
      Determine the data type of the expression, if possible
      Overrides:
      getDataType in class NodeSetValue
      Returns:
      Value.NODESET

    • getRootNode

      public DocumentInfo getRootNode()
      Get the root (document) node

    • copy

      public void copy(Outputter out) throws TransformerException
      Copy the result tree fragment value to a given Outputter
      Throws:
      TransformerException

    • display

      public void display(int level)
      Diagnostic print of expression structure
      Overrides:
      display in class NodeSetValue