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Java Source Code / Java Documentation » Wiki Engine » JAMWiki » org.jamwiki.db

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.jamwiki.db .WikiResultSet

WikiResultSet
public class WikiResultSet (Code)
	This class is a wrapper around the java.sql.ResultSet class, allowing the data from a SQL query to be accessed without requiring that a database connection be held. The main advantage of this approach is that all connection handling can be done by low-level database functions, and the user can process a result set without the need to ensure that the connection is properly closed after the data is processed.

Constructor Summary
public	WikiResultSet() Constructor used primarily for building new result sets.
protected	WikiResultSet(ResultSet rs) Create a WikiResultSet from a standard ResultSet.

Method Summary
public boolean	absolute(int row) Moves the cursor to the given row number in this ResultSet object. If the row number is positive, the cursor moves to the given row number with respect to the beginning of the result set.
public void	addRow(WikiResultSet rs) Method used to create a new WikiResultSet by copying rows of other WikiResultSet objects. Parameters: rs - The SQLResult that is being copied.
public void	beforeFirst() Moves the cursor to the front of this `WikiResultSet` object, just before the first row.
public boolean	first()
public char	getChar(String columnName) Retrieves the value of the designated column in the current row of this `WikiResultSet` object as a `char` value in the Java programming language. Parameters: columnName - The SQL name of the column.
public Date	getDate(String columnName) Retrieves the value of the designated column in the current row of this `WikiResultSet` object as a `java.sql.Date` object in the Java programming language. This method duplicates the java.sql.ResultSet.getDate ResultSet.getDate(String columnName) method. Parameters: columnName - The SQL name of the column.
public int	getInt(String columnName) Retrieves the value of the designated column in the current row of this `WikiResultSet` object as an `int` in the Java programming language. This method duplicates the java.sql.ResultSet.getInt ResultSet.getInt(String columnName) method. Parameters: columnName - The SQL name of the column.
public long	getLong(String columnName) Retrieves the value of the designated column in the current row of this `WikiResultSet` object as a `long` in the Java programming language. This method duplicates the java.sql.ResultSet.getLong ResultSet.getLong(String columnName) method. Parameters: columnName - The SQL name of the column.
public Object	getObject(String columnName) Retrieves the value of the designated column in the current row of this `WikiResultSet` object as a `java.lang.Object` object in the Java programming language. This method duplicates the java.sql.ResultSet.getObject ResultSet.getObject(String columnName) method. Parameters: columnName - The SQL name of the column.
public String	getString(String columnName) Retrieves the value of the designated column in the current row of this `WikiResultSet` object as a `java.lang.String` object in the Java programming language. This method duplicates the java.sql.ResultSet.getString ResultSet.getString(String columnName) method. Parameters: columnName - The SQL name of the column.
public Timestamp	getTimestamp(String columnName) Retrieves the value of the designated column in the current row of this `WikiResultSet` object as a `java.lang.Timestamp` object in the Java programming language. This method duplicates the java.sql.ResultSet.getTimestamp ResultSet.getTimestamp(String columnName) method. Parameters: columnName - The SQL name of the column.
public boolean	last()
public boolean	next() Moves the cursor down one row from its current position.
public int	size()

Constructor Detail

WikiResultSet
public WikiResultSet()(Code)
	Constructor used primarily for building new result sets. Use this constructor to create an empty result set, then fill it using the WikiResultSet.addRow addRow() method.

WikiResultSet
protected WikiResultSet(ResultSet rs) throws Exception(Code)
	Create a WikiResultSet from a standard ResultSet. See Also: ResultSet Parameters: rs - The ResultSet used to populate this WikiResultSet.

Method Detail

absolute

public boolean absolute(int row)(Code)

Moves the cursor to the given row number in this ResultSet object.

If the row number is positive, the cursor moves to the given row number with respect to the beginning of the result set. The first row is row 1, the second is row 2, and so on.

If the given row number is negative, the cursor moves to an absolute row position with respect to the end of the result set. For example, calling the method absolute(-1) positions the cursor on the last row; calling the method absolute(-2) moves the cursor to the next-to-last row, and so on.

An attempt to position the cursor beyond the first/last row in the result set leaves the cursor before the first row or after the last row.

This method duplicates the functionality of the java.sql.ResultSet.absolute ResultSet.absolute(int row) method.

Parameters:
row - The number of the row to which the cursor should move. A positivenumber indicates the row number counting from the beginning of the resultset; a negative number indicates the row number counting from the end ofthe result set. true if the cursor is on the result set; false otherwise.

addRow
public void addRow(WikiResultSet rs) throws Exception(Code)
	Method used to create a new WikiResultSet by copying rows of other WikiResultSet objects. Parameters: rs - The SQLResult that is being copied. Only the current row willbe copied into the new WikiResultSet object. throws: Exception - Thrown if the row pointer of the WikiResultSet beingcopied has passed the end of the WikiResultSet.

beforeFirst

public void beforeFirst()(Code)

Moves the cursor to the front of this WikiResultSet object, just before the first row. This method has no effect if the result set contains no rows.

This method duplicates the java.sql.ResultSet.beforeFirst ResultSet.beforeFirst() method.

first

public boolean first()(Code)

Moves the cursor to the first row in this WikiResultSet object.

This method duplicates the java.sql.ResultSet.first ResultSet.first() method.

true if the cursor is on a valid row; falseif there are no rows in the result set.

getChar
public char getChar(String columnName) throws SQLException(Code)
	Retrieves the value of the designated column in the current row of this `WikiResultSet` object as a `char` value in the Java programming language. Parameters: columnName - The SQL name of the column. The column value; if the value is SQL `NULL`, the valuereturned is `0`. throws: SQLException - If the cursor position is invalid or if the column name doesnot exist in the result set.

getDate

public Date getDate(String columnName) throws SQLException(Code)

Retrieves the value of the designated column in the current row of this WikiResultSet object as a java.sql.Date object in the Java programming language.

This method duplicates the java.sql.ResultSet.getDate ResultSet.getDate(String columnName) method.

Parameters:
columnName - The SQL name of the column. The column value; if the value is SQL NULL, the valuereturned is null.
throws:
SQLException - If the cursor position is invalid or if the column name doesnot exist in the result set.

getInt

public int getInt(String columnName) throws SQLException(Code)

Retrieves the value of the designated column in the current row of this WikiResultSet object as an int in the Java programming language.

This method duplicates the java.sql.ResultSet.getInt ResultSet.getInt(String columnName) method.

Parameters:
columnName - The SQL name of the column. The column value; if the value is SQL NULL, the valuereturned is 0.
throws:
SQLException - If the cursor position is invalid or if the column name doesnot exist in the result set.

getLong

public long getLong(String columnName) throws SQLException(Code)

Retrieves the value of the designated column in the current row of this WikiResultSet object as a long in the Java programming language.

This method duplicates the java.sql.ResultSet.getLong ResultSet.getLong(String columnName) method.

getObject

public Object getObject(String columnName) throws SQLException(Code)

Retrieves the value of the designated column in the current row of this WikiResultSet object as a java.lang.Object object in the Java programming language.

This method duplicates the java.sql.ResultSet.getObject ResultSet.getObject(String columnName) method.

getString

public String getString(String columnName) throws SQLException(Code)

Retrieves the value of the designated column in the current row of this WikiResultSet object as a java.lang.String object in the Java programming language.

This method duplicates the java.sql.ResultSet.getString ResultSet.getString(String columnName) method.

getTimestamp

public Timestamp getTimestamp(String columnName) throws SQLException(Code)

Retrieves the value of the designated column in the current row of this WikiResultSet object as a java.lang.Timestamp object in the Java programming language.

This method duplicates the java.sql.ResultSet.getTimestamp ResultSet.getTimestamp(String columnName) method.

last

public boolean last()(Code)

Moves the cursor to the last row in this ResultSet object.

This method duplicates the java.sql.ResultSet.last ResultSet.last() method.

true if the cursor is on a valid row; falseif there are no rows in the result set.

next

public boolean next()(Code)

Moves the cursor down one row from its current position. A ResultSet cursor is initially positioned before the first row; the first call to the method next makes the first row the current row; the second call makes the second row the current row, and so on.

This method duplicates the java.sql.ResultSet.next ResultSet.next() method.

true if the new current row is valid; falseif there are no more rows.

size
public int size()(Code)
	Return the total number of rows that exist in this result set. The total number of rows that exist in this result set.

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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