How to use

getMinColumns

method

in

org.dashbuilder.dataset.DataSetLookupConstraints

void onColumnFunctionDeleted(@Observes GroupFunctionDeletedEvent event) {
  List<GroupFunction> functionList = getFirstGroupFunctions();
  boolean canDelete = functionList.size() > lookupConstraints.getMinColumns();
  GroupFunction removed = event.getGroupFunction();
  int index = getFirstGroupFunctionIdx(removed);
  if (canDelete && index >= 0) {
    functionList.remove(index);
    updateColumnControls();
    changeEvent.fire(new DataSetLookupChangedEvent(dataSetLookup));
  }
}

void onColumnFunctionDeleted(@Observes GroupFunctionDeletedEvent event) {
  List<GroupFunction> functionList = getFirstGroupFunctions();
  boolean canDelete = functionList.size() > lookupConstraints.getMinColumns();
  GroupFunction removed = event.getGroupFunction();
  int index = getFirstGroupFunctionIdx(removed);
  if (canDelete && index >= 0) {
    functionList.remove(index);
    updateColumnControls();
    changeEvent.fire(new DataSetLookupChangedEvent(dataSetLookup));
  }
}

boolean functionsRequired = lookupConstraints.isFunctionRequired();
boolean functionsEnabled = (groupColumnId != null || functionsRequired);
boolean canDelete = groupFunctions.size() > lookupConstraints.getMinColumns();
int n = lookupConstraints.getMaxColumns();
boolean canAdd = lookupConstraints.areExtraColumnsAllowed() && (n < 0 || groupFunctions.size() < n);

boolean functionsRequired = lookupConstraints.isFunctionRequired();
boolean functionsEnabled = (groupColumnId != null || functionsRequired);
boolean canDelete = groupFunctions.size() > lookupConstraints.getMinColumns();
int n = lookupConstraints.getMaxColumns();
boolean canAdd = lookupConstraints.areExtraColumnsAllowed() && (n < 0 || groupFunctions.size() < n);

@Test
public void testMultipleColumns() {
  DataSetLookup lookup = MULTIPLE_COLUMNS.newDataSetLookup(METADATA);
  assertEquals(lookup.getDataSetUUID(), "test");
  List<DataSetOp> opList = lookup.getOperationList();
  assertEquals(opList.size(), 1);
  List<DataSetGroup> groupList = lookup.getOperationList(DataSetGroup.class);
  assertEquals(groupList.size(), 1);
  DataSetGroup groupOp = groupList.get(0);
  assertNotNull(groupOp);
  ColumnGroup cg = groupOp.getColumnGroup();
  assertNull(cg);
  assertEquals(groupOp.getGroupFunctions().size(), MULTIPLE_COLUMNS.getMinColumns());
  for (int i = 0; i < MULTIPLE_COLUMNS.getMinColumns(); i++) {
    GroupFunction gf = groupOp.getGroupFunction(METADATA.getColumnId(i));
    assertNotNull(gf);
    assertEquals(gf.getSourceId(), METADATA.getColumnId(i));
    assertEquals(gf.getColumnId(), METADATA.getColumnId(i));
    assertNull(gf.getFunction());
  }
}

@Test
public void testMultipleColumns() {
  DataSetLookup lookup = MULTIPLE_COLUMNS.newDataSetLookup(METADATA);
  assertEquals(lookup.getDataSetUUID(), "test");
  List<DataSetOp> opList = lookup.getOperationList();
  assertEquals(opList.size(), 1);
  List<DataSetGroup> groupList = lookup.getOperationList(DataSetGroup.class);
  assertEquals(groupList.size(), 1);
  DataSetGroup groupOp = groupList.get(0);
  assertNotNull(groupOp);
  ColumnGroup cg = groupOp.getColumnGroup();
  assertNull(cg);
  assertEquals(groupOp.getGroupFunctions().size(), MULTIPLE_COLUMNS.getMinColumns());
  for (int i = 0; i < MULTIPLE_COLUMNS.getMinColumns(); i++) {
    GroupFunction gf = groupOp.getGroupFunction(METADATA.getColumnId(i));
    assertNotNull(gf);
    assertEquals(gf.getSourceId(), METADATA.getColumnId(i));
    assertEquals(gf.getColumnId(), METADATA.getColumnId(i));
    assertNull(gf.getFunction());
  }
}