Maintaining editable state in multiple cells on datagrid
Hi,
I'm looking to create a component, (and from the tutorials
i've read, i imagine a datagrid would be best) where i can change
multiple cells, keep them in an editable state (visual reminder of
changes made as well as functionally editable) - and to then flush
the changes through with a keystroke - just hitting return
basically. the component would be recieving push data through
httpservices/webservices, and the user will send adjustments back,
usually multiple changes at once. i've looked at item renderers,
but that seems to control more the format/appearance of a component
than its functions?
Is this possible to do in flex? i'm assessing alongside gwt,
and trying to figure just how lowlevel the customisation can go in
flex. any ideas/tutorials/examples would be very much appreciated,
cheers!
Hi,
Refer the sample code
https://forums.sdn.sap.com/click.jspa?searchID=12153389&messageID=1593610
Regards
Kiran Sure
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import java.util.Arrays;
import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.SelectionMode;
import javafx.scene.control.TableCell;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.input.MouseDragEvent;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.stage.Stage;
import javafx.util.Callback;
public class DragSelectionTable extends Application {
private TableView<Person> table = new TableView<Person>();
private final ObservableList<Person> data =
FXCollections.observableArrayList(
new Person("Jacob", "Smith", "[email protected]"),
new Person("Isabella", "Johnson", "[email protected]"),
new Person("Ethan", "Williams", "[email protected]"),
new Person("Emma", "Jones", "[email protected]"),
new Person("Michael", "Brown", "[email protected]")
public static void main(String[] args) {
launch(args);
@Override
public void start(Stage stage) {
Scene scene = new Scene(new Group());
stage.setTitle("Table View Sample");
stage.setWidth(450);
stage.setHeight(500);
final Label label = new Label("Address Book");
label.setFont(new Font("Arial", 20));
table.setEditable(true);
TableColumn<Person, String> firstNameCol = new TableColumn<>("First Name");
firstNameCol.setMinWidth(100);
firstNameCol.setCellValueFactory(
new PropertyValueFactory<Person, String>("firstName"));
TableColumn<Person, String> lastNameCol = new TableColumn<>("Last Name");
lastNameCol.setMinWidth(100);
lastNameCol.setCellValueFactory(
new PropertyValueFactory<Person, String>("lastName"));
TableColumn<Person, String> emailCol = new TableColumn<>("Email");
emailCol.setMinWidth(200);
emailCol.setCellValueFactory(
new PropertyValueFactory<Person, String>("email"));
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firstNameCol.setCellFactory(cellFactory);
lastNameCol.setCellFactory(cellFactory);
emailCol.setCellFactory(cellFactory);
table.setItems(data);
table.getColumns().addAll(Arrays.asList(firstNameCol, lastNameCol, emailCol));
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vbox.setSpacing(5);
vbox.setPadding(new Insets(10, 0, 0, 10));
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stage.setScene(scene);
stage.show();
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@Override
public void handle(MouseEvent event) {
startFullDrag();
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setOnMouseDragEntered(new EventHandler<MouseDragEvent>() {
@Override
public void handle(MouseDragEvent event) {
getTableColumn().getTableView().getSelectionModel().select(getIndex(), getTableColumn());
@Override
public void updateItem(String item, boolean empty) {
super.updateItem(item, empty);
if (empty) {
setText(null);
} else {
setText(item);
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@Override
public TableCell<Person, String> call(final TableColumn<Person, String> col) {
return new DragSelectionCell();
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private final SimpleStringProperty firstName;
private final SimpleStringProperty lastName;
private final SimpleStringProperty email;
private Person(String fName, String lName, String email) {
this.firstName = new SimpleStringProperty(fName);
this.lastName = new SimpleStringProperty(lName);
this.email = new SimpleStringProperty(email);
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return firstName.get();
public void setFirstName(String fName) {
firstName.set(fName);
public String getLastName() {
return lastName.get();
public void setLastName(String fName) {
lastName.set(fName);
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return email.get();
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2 - The geoRasterData table
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We now want to give the worst scenario within a given geometry or distance. So if I get back all the cell values within a given geometry/distance I can then call my other functions against the 3rd table to get the worst scores.
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See:
Trying to get multiple cell values within a geometry
If I am looking to get a list of cell values that interact with my geometry/distance and then loop through them, is there a better way?
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Any ideas?
CREATE OR REPLACE FUNCTION GEOSUK.getCellValuesInGeom_FNC RETURN VARCHAR2 AS
gr sdo_georaster;
lb blob;
win1 sdo_geometry;
win2 sdo_number_array;
status VARCHAR2(1000) := NULL;
CDP varchar2(80);
FLT number := 0;
cdl number;
vals varchar2(32000) := null;
VAL number;
amt0 integer;
amt integer;
off integer;
len integer;
buf raw(32767);
MAXV number := null;
r1 raw(1);
r2 raw(2);
r4 raw(200);
r8 raw(8);
MATCH varchar2(10) := '';
ROW_COUNT integer := 0;
COL_COUNT integer := 0;
ROW_CUR integer := 0;
COL_CUR integer := 0;
CUR_XOFFSET integer := 0;
CUR_YOFFSET integer := 0;
ORIGINY integer := 0;
ORIGINX integer := 0;
XOFF number(38,0) := 0;
YOFF number(38,0) := 0;
BEGIN
status := '1';
SELECT a.georaster INTO gr FROM JBA_MEGARASTER_1012 a WHERE id=1;
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cdp := gr.metadata.extract('/georasterMetadata/rasterInfo/cellDepth/text()',
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if cdp = '32BIT_REAL' then
flt := 1;
end if;
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if cdl < 8 then
-- if celldepth<8bit, get the cell values as 8bit integers
cdl := 8;
end if;
dbms_lob.createTemporary(lb, TRUE);
status := '2';
-- querying/clipping polygon
win1 := SDO_GEOM.SDO_BUFFER(SDO_GEOMETRY(2001,27700,MDSYS.SDO_POINT_TYPE(473517,173650.3, NULL),NULL,NULL), 10, .005);
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sdo_geor.getRasterSubset(gr, 0, win1, '1',
lb, win2, NULL, NULL, 'TRUE');
-- Then work on the resulting subset stored in lb.
status := '2.3';
DBMS_OUTPUT.PUT_LINE ( 'cdl: '||cdl );
len := dbms_lob.getlength(lb);
cdl := cdl / 8;
-- make sure to read all the bytes of a cell value at one run
amt := floor(32767 / cdl) * cdl;
amt0 := amt;
status := '3';
ROW_COUNT := (WIN2(3) - WIN2(1))+1;
COL_COUNT := (WIN2(4) - WIN2(2))+1;
--NEED TO FETCH FROM RASTER
ORIGINY := 979405;
ORIGINX := 91685;
--CALCUALATE BLOB AREA
YOFF := ORIGINY - (WIN2(1) * 5); --177005;
XOFF := ORIGINX + (WIN2(2) * 5); --530505;
status := '4';
--LOOP CELLS
off := 1;
WHILE off <= LEN LOOP
dbms_lob.read(lb, amt, off, buf);
for I in 1..AMT/CDL LOOP
if cdl = 1 then
r1 := utl_raw.substr(buf, (i-1)*cdl+1, cdl);
VAL := UTL_RAW.CAST_TO_BINARY_INTEGER(R1);
elsif cdl = 2 then
r2 := utl_raw.substr(buf, (i-1)*cdl+1, cdl);
val := utl_raw.cast_to_binary_integer(r2);
ELSIF CDL = 4 then
IF (((i-1)*cdl+1) + cdl) > len THEN
r4 := utl_raw.substr(buf, (i-1)*cdl+1, (len - ((i-1)*cdl+1)));
ELSE
r4 := utl_raw.substr(buf, (i-1)*cdl+1, cdl+1);
END IF;
if flt = 0 then
val := utl_raw.cast_to_binary_integer(r4);
else
val := utl_raw.cast_to_binary_float(r4);
end if;
elsif cdl = 8 then
r8 := utl_raw.substr(buf, (i-1)*cdl+1, cdl);
val := utl_raw.cast_to_binary_double(r8);
end if;
if MAXV is null or MAXV < VAL then
MAXV := VAL;
end if;
IF i = 1 THEN
VALS := VALS || VAL;
ELSE
VALS := VALS ||'|'|| VAL;
END IF;
end loop;
off := off+amt;
amt := amt0;
end loop;
dbms_lob.freeTemporary(lb);
status := '5';
RETURN VALS;
EXCEPTION
WHEN OTHERS THEN
RAISE_APPLICATION_ERROR(-20001, 'GENERAL ERROR IN MY PROC, Status: '||status||', SQL ERROR: '||SQLERRM);
END;Hey guys,
Zzhang,
That's a good spot and as it happens I spotted that and that is why I am sure I am querying that lob wrong. I always get the a logic going past the total length of the lob.
I think I am ok using 11.2.0.4, if I can get this working it is really important to us, so saying to roll up to 11.2.0.4 for this would be no problem.
The error in 11.2.0.3 was an internal error: [kghstack_underflow_internal_3].
Something that I think I need to find out more about, but am struggling to get more information on is, I am assuming that the lob that is returned is all cell values or at lest an array of 4 byte (32 bit) chunks, although, I don't know this.
Is that a correct assumption or is there more to it?
Have either of you seen any documentation on how to query this lob?
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