Package net.sf.saxon.query

Class DynamicQueryContext

java.lang.Object
net.sf.saxon.query.DynamicQueryContext
public class DynamicQueryContext extends Object
This object represents a dynamic context for query execution. This class is used by the application writer to set up aspects of the dynamic context; it is not used operationally (or modified) by the XQuery processor itself, which copies all required information into its own internal representation.

  • Constructor Details

    • DynamicQueryContext

      public DynamicQueryContext(Configuration config)
      Create the dynamic context for a query
      Parameters:
      config - the Saxon configuration
      Since:
      8.4.

  • Method Details

    • getSchemaValidationMode

      public int getSchemaValidationMode()
      Ask whether source documents loaded using the doc(), document(), and collection() functions, or supplied as a StreamSource or SAXSource to the transform() or addParameter() method should be subjected to schema validation
      Returns:
      the schema validation mode previously set using setSchemaValidationMode(), or the default mode Validation.DEFAULT otherwise.

    • setSchemaValidationMode

      public void setSchemaValidationMode(int validationMode)
      Say whether source documents loaded using the doc(), document(), and collection() functions, or supplied as a StreamSource or SAXSource to the transform() or addParameter() method, should be subjected to schema validation. The default value is taken from the corresponding property of the Configuration.
      Parameters:
      validationMode - the validation (or construction) mode to be used for source documents. One of Validation.STRIP, Validation.PRESERVE, Validation.STRICT, Validation.LAX
      Since:
      9.2

    • setApplyFunctionConversionRulesToExternalVariables

      public void setApplyFunctionConversionRulesToExternalVariables(boolean convert)
      Say whether the function conversion rules should be applied to supplied parameter values. For example, this allows an integer to be supplied as the value for a parameter where the expected type is xs:double. The default is true. The value "false" is allowed because XQJ requires that no conversion is attempted.
      Parameters:
      convert - true if function conversion rules are to be applied to supplied values; if false, the supplied value must match the required type exactly.
      Since:
      9.3

    • isApplyFunctionConversionRulesToExternalVariables

      public boolean isApplyFunctionConversionRulesToExternalVariables()
      Ask whether the function conversion rules should be applied to supplied parameter values. For example, this allows an integer to be supplied as the value for a parameter where the expected type is xs:double. The default is true.
      Returns:
      true if function conversion rules are to be applied to supplied values; if false, the supplied value must match the required type exactly.
      Since:
      9.3

    • setContextItem

      public void setContextItem(Item item)
      Set the context item for evaluating the expression. If this method is not called, the context node will be undefined. The context item is available as the value of the expression ".". To obtain a node by parsing a source document, see the method Configuration.buildDocumentTree(javax.xml.transform.Source) in the Configuration class.
      Parameters:
      item - The item that is to be the context item for the query
      Throws:
      IllegalArgumentException - if the supplied item is a node that was built under the wrong Saxon Configuration
      NullPointerException - if the supplied item is null
      Since:
      8.4

    • getContextItem

      public Item getContextItem()
      Get the context item for the query, as set using setContextItem().
      Returns:
      the context item if set, or null otherwise.
      Since:
      8.4

    • setParameter

      public void setParameter(StructuredQName expandedName, GroundedValue value)
      Set a parameter for the query.
      Parameters:
      expandedName - The name of the parameter. It is not an error to supply a value for a parameter that has not been declared, the parameter will simply be ignored. If the parameter has been declared in the query (as an external global variable) then it will be initialized with the value supplied.
      value - The value of the parameter.
      Since:
      8.4. Changed in 9.6 (a) to require a Sequence value, thus making the alternative method setParameterValue redundant, and (b) to accept the name as a StructuredQName Changed in 9.9 to require the second argument to be a GroundedValue

    • clearParameters

      public void clearParameters()
      Reset the parameters to an empty list.

    • getParameter

      public GroundedValue getParameter(StructuredQName expandedName)
      Get the actual value of a parameter to the query.
      Parameters:
      expandedName - the name of the required parameter
      Returns:
      the value of the parameter, if it exists, or null otherwise
      Since:
      8.4. Changed in 9.6 to take a StructuredQName for the name. Changed in 9.9.1.1 to return a generified GroundedValue.

    • getParameters

      public GlobalParameterSet getParameters()
      Get all the supplied parameters.
      Returns:
      a structure containing all the parameters

    • setResourceResolver

      public void setResourceResolver(ResourceResolver resolver)
      Set an object that will be used to resolve URIs used in fn:document() and related functions.
      Parameters:
      resolver - An object that implements the ResourceResolver interface, or null.
      Since:
      11.1; replaces setURIResolver in earlier releases

    • getResourceResolver

      public ResourceResolver getResourceResolver()
      Get the URI resolver.
      Returns:
      the user-supplied URI resolver if there is one, or the system-defined one otherwise
      Since:
      11.1; replaces getURIResolver in earlier releases

    • setUnparsedTextURIResolver

      public void setUnparsedTextURIResolver(UnparsedTextURIResolver resolver)
      Set an object that will be used to resolve URIs used in fn:unparsed-text() and related functions.
      Parameters:
      resolver - An object that implements the UnparsedTextURIResolver interface, or null.
      Since:
      9.5

    • getUnparsedTextURIResolver

      public UnparsedTextURIResolver getUnparsedTextURIResolver()
      Get the URI resolver for unparsed text.
      Returns:
      the user-supplied unparsed text URI resolver if there is one, or the system-defined one otherwise
      Since:
      8.4

    • setErrorListener

      @Deprecated public void setErrorListener(ErrorListener listener)
      Deprecated.
      since 10.0. Use setErrorReporter(net.sf.saxon.lib.ErrorReporter)
      Set the error listener. The error listener receives reports of all run-time errors and can decide how to report them.
      Parameters:
      listener - the ErrorListener to be used
      Since:
      8.4

    • getErrorListener

      @Deprecated public ErrorListener getErrorListener()
      Deprecated.
      since 10.0. Use setErrorReporter(net.sf.saxon.lib.ErrorReporter)
      Get the error listener.
      Returns:
      the ErrorListener in use
      Since:
      8.4

    • setErrorReporter

      public void setErrorReporter(ErrorReporter reporter)
      Set a callback that will be used when reporting a dynamic error or warning
      Parameters:
      reporter - the error reporter to be notified of dynamic errors or warnings
      Since:
      10.0

    • getErrorReporter

      public ErrorReporter getErrorReporter()
      Get the callback that will be used when reporting a dynamic error or warning
      Returns:
      the registered error reporter
      Since:
      10.0

    • setTraceListener

      public void setTraceListener(TraceListener listener)
      Set the trace listener. The trace listener receives reports of all run-time expression evaluation.
      Parameters:
      listener - the TraceListener to be used
      Since:
      9.0

    • getTraceListener

      public TraceListener getTraceListener()
      Get the trace listener.
      Returns:
      the TraceListener in use, or null if none is in use
      Since:
      9.0

    • setTraceFunctionDestination

      public void setTraceFunctionDestination(Logger stream)
      Set the destination for output from the fn:trace() function. By default, the destination is System.err. If a TraceListener is in use, this is ignored, and the trace() output is sent to the TraceListener.
      Parameters:
      stream - the PrintStream to which trace output will be sent. If set to null, trace output is suppressed entirely. It is the caller's responsibility to close the stream after use.
      Since:
      9.1. Changed in 9.6 to use a Logger.

    • getTraceFunctionDestination

      public Logger getTraceFunctionDestination()
      Get the destination for output from the fn:trace() function.
      Returns:
      the PrintStream to which trace output will be sent. If no explicitly destination has been set, returns System.err. If the destination has been set to null to suppress trace output, returns null.
      Since:
      9.1. Changed in 9.6 to use a Logger

    • getCurrentDateTime

      public DateTimeValue getCurrentDateTime()
      Get the date and time set previously using setCurrentDateTime(net.sf.saxon.value.DateTimeValue) or null if none has been set.
      Returns:
      the current date and time, if it has been set.
      Since:
      8.5

    • setCurrentDateTime

      public void setCurrentDateTime(DateTimeValue dateTime) throws XPathException
      Set a value to be used as the current date and time for the query. By default, the "real" current date and time are used. The main purpose of this method is that it allows repeatable results to be achieved when testing queries.

      This method also has the effect of setting the implicit timezone.

      Parameters:
      dateTime - The value to be used as the current date and time. This must include a timezone. The timezone from this value will also be used as the implicit timezone
      Throws:
      XPathException - if the dateTime does not include a timezone
      Since:
      8.5

    • getConfiguration

      public Configuration getConfiguration()
      Get the Configuration associated with this dynamic query context
      Returns:
      the Configuration
      Since:
      8.8

    • initializeController

      public void initializeController(Controller controller) throws XPathException
      Apply the settings from this DynamicQueryContext to a Controller
      Parameters:
      controller - the Controller whose settings are to be initialized
      Throws:
      XPathException - if errors occur