javax.servlet.jsp.jstl.sql
Interface Result
This interface represents the result of a <sql:query>
action. It provides access to the following information in the
query result:
- The result rows (getRows() and getRowsByIndex())
- The column names (getColumnNames())
- The number of rows in the result (getRowCount())
- An indication whether the rows returned represent the complete result
or just a subset that is limited by a maximum row setting
(isLimitedByMaxRows())
An implementation of the
Result interface provides a
disconnected view into the result of a query.
String[] | getColumnNames() - Returns the names of the columns in the result.
|
int | getRowCount() - Returns the number of rows in the cached ResultSet
|
SortedMap[] | getRows() - Returns the result of the query as an array of
SortedMap objects.
|
Object[][] | getRowsByIndex() - Returns the result of the query as an array of arrays.
|
boolean | isLimitedByMaxRows() - Returns true if the query was limited by a maximum row setting
|
getColumnNames
public String[] getColumnNames()
Returns the names of the columns in the result. The order of the names in the array
matches the order in which columns are returned in method getRowsByIndex().
- the column names as an array of
String
objects
getRowCount
public int getRowCount()
Returns the number of rows in the cached ResultSet
- the number of rows in the result
getRows
public SortedMap[] getRows()
Returns the result of the query as an array of
SortedMap
objects.
Each item of the array represents a specific row in the query result.
A row is structured as a
SortedMap
object where the key is the column name,
and where the value is the value associated with the column identified by
the key. The column value is an Object of the Java type corresponding
to the mapping between column types and Java types defined by the JDBC
specification when the
ResultSet.getObject()
method is used.
The
SortedMap
must use the
Comparator
java.util.String.CASE_INSENSITIVE_ORDER
.
This makes it possible to access the key as a case insensitive representation
of a column name. This method will therefore work regardless of the case of
the column name returned by the database.
- The result rows as an array of
SortedMap
objects
getRowsByIndex
public Object[][] getRowsByIndex()
Returns the result of the query as an array of arrays.
The first array dimension represents a specific row in the query result.
The array elements for each row are Object instances of the Java type
corresponding to the mapping between column types and Java types defined
by the JDBC specification when the ResultSet.getObject()
method is used.
- the result rows as an array of
Object[]
objects
isLimitedByMaxRows
public boolean isLimitedByMaxRows()
Returns true if the query was limited by a maximum row setting
- true if the query was limited by a maximum
row setting
Copyright 2003 Sun Microsystems, Inc. All Rights Reserved.