javax.wbem.query
Class SelectExp

java.lang.Object
  |
  +--javax.wbem.query.WQLExp
        |
        +--javax.wbem.query.SelectExp

All Implemented Interfaces:

java.io.Serializable

public class SelectExp

extends WQLExp

This class represents all 'select' clauses that are constructed in the WQL.

     select qualifiedAttributeExp where queryExp
 

Since:

WBEM 1.0

See Also:

CIMClient, Serialized Form

Constructor Summary

SelectExp()

SelectExp(SelectList attList, FromExp fromExp)
Constructor for select clauses.

SelectExp(SelectList attList, FromExp fromExp, QueryExp whereClause)
Constructor for select clauses.

SelectExp(java.lang.String query)
Constructor for select clause.

Method Summary

FromExp	getFromClause() Returns the fromm clause.
SelectList	getSelectList() Returns the selectList.
QueryExp	getWhereClause() Returns the where clause.
java.lang.String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

SelectExp

public SelectExp(java.lang.String query)

Constructor for select clause. It parses the input WQL query and returns a select expression.

Parameters:

query - WQL select query string

Throws:

java.lang.IllegalArgumentException - if the input query is not well formed. The exception message contains string details of the specific parsing exception.

SelectExp

public SelectExp(SelectList attList,
                 FromExp fromExp)

Constructor for select clauses. Used by the WQL parser to construct select clauses.

Parameters:

attList - List of attributes which are projected from the returned rows.

fromExp - The from clause which specifies which 'table' the selection is made from. In the WQL mapping, classes are mapped into tables, instances into rows and properties into columns.

SelectExp

public SelectExp(SelectList attList,
                 FromExp fromExp,
                 QueryExp whereClause)

Constructor for select clauses. Used by the WQL parser to construct select clauses.

Parameters:

attList - List of attributes which are projected from the returned rows.

fromExp - The from clause which specifies which 'table' the selection is made from. In the WQL mapping, classes are mapped into tables, instances into rows and properties into columns.

whereClause - The where clause contains conditional expressions which evaluate to true or false for a given row. Those rows which evaluate to true are selected.

SelectExp

public SelectExp()

Method Detail

getSelectList

public SelectList getSelectList()

Returns the selectList.

Returns:

SelectList.

getWhereClause

public QueryExp getWhereClause()

Returns the where clause.

Returns:

whereClause.

getFromClause

public FromExp getFromClause()

Returns the fromm clause.

Returns:

fromClause.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object