android.database
public class
public class
android.database.CursorWindow
| java.lang.Object | ||
| android.database.CursorWindow | Parcelable | |
A buffer containing multiple cursor rows.
Summary
Constants
| Value | ||||
|---|---|---|---|---|
| Creator | CREATOR |
Public Constructors
| CursorWindow(boolean localWindow) | |||||
| Creates a new empty window. | |||||
Public Methods
| void | clear() | ||||
| Clears out the existing contents of the window, making it safe to reuse for new data. | |||||
| void | close() | ||||
| Cleans up the native resources associated with the window. | |||||
| void | finalize() | ||||
| Called by the virtual machine when there are no longer any (non-weak) references to the receiver. | |||||
| double | getDouble(int row, int column) | ||||
| Returns a double for the given field. | |||||
| float | getFloat(int row, int column) | ||||
| Returns a float for the given field. | |||||
| int | getInt(int row, int column) | ||||
| Returns an int for the given field. | |||||
| long | getLong(int row, int column) | ||||
| Returns a long for the given field. | |||||
| int | getNumRows() | ||||
| Returns the number of rows in this window. | |||||
| short | getShort(int row, int column) | ||||
| Returns a short for the given field. | |||||
| int | getStartPosition() | ||||
| Returns the starting position of this window within the entire Cursor's result set. | |||||
| String | getString(int row, int column) | ||||
| Returns a String for the given field. | |||||
| boolean | isNull(int row, int column) | ||||
Returns true if given field is NULL. |
|||||
| static | CursorWindow | newFromParcel(Parcel p) | |||
| void | writeToParcel(Parcel dest) | ||||
Methods inherited
from class
java.lang.Object
Methods inherited
from interface
android.os.Parcelable
Details
Constants
public static final Creator CREATOR
Public Constructors
public CursorWindow(boolean localWindow)
Creates a new empty window.
Parameters
| localWindow | true if this window will be used in this process only |
|---|
Public Methods
public void clear()
Clears out the existing contents of the window, making it safe to reuse
for new data. Note that the number of columns in the window may NOT
change across a call to clear().
public void close()
Cleans up the native resources associated with the window.
public void finalize()
Called by the virtual machine when there are no longer any (non-weak)
references to the receiver. Subclasses can use this facility to guarantee
that any associated resources are cleaned up before the receiver is
garbage collected. Uncaught exceptions which are thrown during the
running of the method cause it to terminate immediately, but are
otherwise ignored.
Note: The virtual machine assumes that the implementation in class Object is empty.
public double getDouble(int row, int column)
Returns a double for the given field.
Parameters
| row | the row to read from, 0 being the first row in the window |
|---|---|
| column | the column to read from |
Returns
- a double value for the given field
public float getFloat(int row, int column)
Returns a float for the given field.
Parameters
| row | the row to read from, 0 being the first row in the window |
|---|---|
| column | the column to read from |
Returns
- a float value for the given field
public int getInt(int row, int column)
Returns an int for the given field.
Parameters
| row | the row to read from, 0 being the first row in the window |
|---|---|
| column | the column to read from |
Returns
- an int value for the given field
public long getLong(int row, int column)
Returns a long for the given field.
Parameters
| row | the row to read from, 0 being the first row in the window |
|---|---|
| column | the column to read from |
Returns
- a long value for the given field
public int getNumRows()
Returns the number of rows in this window.
Returns
- the number of rows in this window.
public short getShort(int row, int column)
Returns a short for the given field.
Parameters
| row | the row to read from, 0 being the first row in the window |
|---|---|
| column | the column to read from |
Returns
- a short value for the given field
public int getStartPosition()
Returns the starting position of this window within the entire
Cursor's result set.
Returns
- the starting position of this window within the entire Cursor's result set.
public String getString(int row, int column)
Returns a String for the given field.
Parameters
| row | the row to read from, 0 being the first row in the window |
|---|---|
| column | the column to read from |
Returns
- a String value for the given field
public boolean isNull(int row, int column)
Returns
true if given field is NULL.
Parameters
| row | the row to read from, 0 being the first row in the window |
|---|---|
| column | the column to read from |
Returns
trueif given field isNULL