ORG.oclc.webz
Class ZQueryHandler

java.lang.Object
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  +--ORG.oclc.webz.Verb
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        +--ORG.oclc.webz.ZVerb
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              +--ORG.oclc.webz.ZQueryHandler

Direct Known Subclasses:

LIMIT, QUERY, SCAN

public class ZQueryHandler

extends ZVerb

The ZQueryHandler class is a utility class for Z39.50 search and scan - It creates a query string from an input URL and invokes the Z39.58 query parser to create a query string to pass the Z39.50 search and scan classes.

See Also:

Z3958Parser, UserStateObject, ZDb, Log

Fields inherited from class ORG.oclc.webz.ZVerb

bytesIn, bytesOut, dbGroupSearch, dbname, fmtClass, format, inputQueryInfo, numrecs, postings, ranked, recno, resultSetName, sorting, tempDb, traceMsgs, z39session, zDb, zQueryTerm, zServer, zUserData

Fields inherited from class ORG.oclc.webz.Verb

user, widgets

Constructor Summary

ZQueryHandler()
Constructs a ZQueryHandler object

Method Summary

String	getErrMsg() Retrieves a String containing the error message from the Z39.58 query parser
int	getErrno() Retrieves an integer containing the error code from the Z39.58 query parser
String	parse(DataPairs inputQueryInfo, ZDb db, String defaultOperator) Creates a String containing a Z39.50 query string based on the input URL parsed query contained in the inputQueryObject.

Methods inherited from class ORG.oclc.webz.ZVerb

doAccessControl, doSort, initZUser, restoreDbState, saveDbState, saveRecs, toString

Methods inherited from class ORG.oclc.webz.Verb

runit, setUpPage

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ZQueryHandler

public ZQueryHandler()

Constructs a ZQueryHandler object

Method Detail

getErrMsg

public String getErrMsg()

Retrieves a String containing the error message from the Z39.58 query parser

Returns:

String

getErrno

public int getErrno()

Retrieves an integer containing the error code from the Z39.58 query parser

Returns:

int

parse

public String parse(DataPairs inputQueryInfo,
                    ZDb db,
                    String defaultOperator)
             throws Exception

Creates a String containing a Z39.50 query string based on the input URL parsed query contained in the inputQueryObject. It invokes the Z39.50 Query parser to create the query suitable for the Z39.50 search or scan.

Parameters:

inputQueryInfo - the DataPairs containing the normalized input URL query and limits

Returns:

String

Throws:

Exception - any exception caught from the parser class