## net.sf.saxon.query
Class QueryReader

    java.lang.Object
      net.sf.saxon.query.QueryReader

    public class QueryReader

extends java.lang.Object

This class contains static methods used to read a query as a byte stream, infer the encoding if necessary, and return the text of the query as a string; also methods to import functions and variables from one module into another, and check their consistency.

Method Summary
`static java.lang.String` `readEncoding(java.io.InputStream is)` Read an input stream non-destructively to determine the encoding from the Query Prolog
`static java.lang.String` `readInputStream(java.io.InputStream is, java.lang.String encoding, NameChecker nameChecker)` Read a query from an InputStream.
`static java.lang.String` `readSourceQuery(javax.xml.transform.stream.StreamSource ss, NameChecker nameChecker)` Read a query module given a StreamSource

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

Method Detail

### readSourceQuery

    public static java.lang.String readSourceQuery(javax.xml.transform.stream.StreamSource ss,
                                                   NameChecker nameChecker)
                                            throws XPathException

  Read a query module given a StreamSource

  Parameters:
    `ss` - the supplied StreamSource. This must contain a non-null systemID which defines the base URI of the query module, and either an InputStream or a Reader containing the query text. In the case of an InputStream the method attempts to infer the encoding; in the case of a Reader, this has already been done, and the encoding specified within the query itself is ignored.

    The method reads from the InputStream or Reader contained in the StreamSource up to the end of file unless a fatal error occurs. It does not close the InputStream or Reader; this is the caller's responsibility.

    `nameChecker` - this checks XML names against either the XML 1.0 or XML 1.1 rules
  Returns:
    the text of the query
  Throws:
    `XPathException`

### readEncoding

    public static java.lang.String readEncoding(java.io.InputStream is)
                                         throws XPathException

  Read an input stream non-destructively to determine the encoding from the Query Prolog

  Parameters:
    `is` - the input stream: this must satisfy the precondition is.markSupported() = true.
  Returns:
    the encoding to be used: defaults to UTF-8 if no encoding was specified explicitly in the query prolog
  Throws:
    `XPathException` - if the input stream cannot be read

### readInputStream

    public static java.lang.String readInputStream(java.io.InputStream is,
                                                   java.lang.String encoding,
                                                   NameChecker nameChecker)
                                            throws XPathException

  Read a query from an InputStream. The method checks that all characters are valid XML characters, and also performs normalization of line endings.

  Parameters:
    `is` - the input stream
    `encoding` - the encoding, or null if the encoding is unknown
    `nameChecker` - the nameChecker to be used for checking characters
  Returns:
    the content of the InputStream as a string
  Throws:
    `XPathException`

Copyright (c) Saxonica Limited. All rights reserved.