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/*
* Copyright 2004-2010 H2 Group. Multiple-Licensed under the H2 License,
* Version 1.0, and under the Eclipse Public License, Version 1.0
* (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package android.database;
import android.content.ContentResolver;
import android.net.Uri;
import android.os.Bundle;
/**
* This interface allows to access the rows in a result set.
*/
public interface Cursor {
/**
* Get the row count.
*
* @return the row count
*/
int getCount();
/**
* Deactivate the cursor. The cursor can be re-activated using requery().
*/
void deactivate();
/**
* Get the column index. The first column is 0.
*
* @param columnName the name of the column
* @return the column index, or -1 if the column was not found
*/
int getColumnIndex(String columnName);
/**
* Close the cursor.
*/
void close();
/**
* Get the column names.
*
* @return the column names
*/
String[] getColumnNames();
/**
* Register a data set observer.
*
* @param observer the observer
*/
void registerDataSetObserver(DataSetObserver observer);
/**
* Re-run the query.
*
* @return TODO
*/
boolean requery();
/**
* Move the cursor by the given number of rows forward or backward.
*
* @param offset the row offset
* @return true if the operation was successful
*/
boolean move(int offset);
/**
* TODO
*/
void copyStringToBuffer(int columnIndex, CharArrayBuffer buffer);
/**
* Get the value from the current row.
*
* @param columnIndex the column index (0, 1,...)
* @return the value
*/
byte[] getBlob(int columnIndex);
/**
* Get the number of columns in the result.
*
* @return the column count
*/
int getColumnCount();
/**
* Get the column index for the given column name, or throw an exception if
* not found.
*
* @param columnName the column name
* @return the index
*/
int getColumnIndexOrThrow(String columnName);
/**
* Get the name of the given column.
*
* @param columnIndex the column index (0, 1,...)
* @return the name
*/
String getColumnName(int columnIndex);
/**
* Get the value from the current row.
*
* @param columnIndex the column index (0, 1,...)
* @return the value
*/
double getDouble(int columnIndex);
/**
* TODO
*
* @return TODO
*/
Bundle getExtras();
/**
* Get the value from the current row.
*
* @param columnIndex the column index (0, 1,...)
* @return the value
*/
float getFloat(int columnIndex);
/**
* Get the value from the current row.
*
* @param columnIndex the column index (0, 1,...)
* @return the value
*/
int getInt(int columnIndex);
/**
* Get the value from the current row.
*
* @param columnIndex the column index (0, 1,...)
* @return the value
*/
long getLong(int columnIndex);
/**
* Get the current row number
*
* @return the row number TODO 0, 1,...
*/
int getPosition();
/**
* Get the value from the current row.
*
* @param columnIndex the column index (0, 1,...)
* @return the value
*/
short getShort(int columnIndex);
/**
* Get the value from the current row.
*
* @param columnIndex the column index (0, 1,...)
* @return the value
*/
String getString(int columnIndex);
/**
* The method onMove is only called if this method returns true.
*
* @return true if calling onMove is required
*/
boolean getWantsAllOnMoveCalls();
/**
* Check if the current position is past the last row.
*
* @return true if it is
*/
boolean isAfterLast();
/**
* Check if the current position is before the first row.
*
* @return true if it is
*/
boolean isBeforeFirst();
/**
* Check if the cursor is closed.
*
* @return true if it is
*/
boolean isClosed();
/**
* Check if the current position is on the first row.
*
* @return true if it is
*/
boolean isFirst();
/**
* Check if the current position is on the last row.
*
* @return true if it is
*/
boolean isLast();
/**
* Check if the value of the current row is null.
*
* @param columnIndex the column index (0, 1,...)
* @return true if it is
*/
boolean isNull(int columnIndex);
/**
* Move to the first row.
*
* @return TODO
*/
boolean moveToFirst();
/**
* Move to the last row.
*
* @return TODO
*/
boolean moveToLast();
/**
* Move to the next row.
*
* @return TODO
*/
boolean moveToNext();
/**
* Move to the given row.
*
* @param position TODO
* @return TODO
*/
boolean moveToPosition(int position);
/**
* Move to the previous row.
*
* @return TODO
*/
boolean moveToPrevious();
/**
* TODO
*
* @param observer TODO
*/
void registerContentObserver(ContentObserver observer);
/**
* TODO
*
* @param extras TODO
* @return TODO
*/
Bundle respond(Bundle extras);
/**
* TODO
*
* @param cr TODO
* @param uri TODO
*/
void setNotificationUri(ContentResolver cr, Uri uri);
/**
* TODO
*
* @param observer TODO
*/
void unregisterContentObserver(ContentObserver observer);
/**
* TODO
*
* @param observer TODO
*/
void unregisterDataSetObserver(DataSetObserver observer);
}