/**
* Gets input value corrsponding to given columnRef from given updateDesc
*
* @param updateDesc updateDesc pointing to the input values
* @param columnRef The columnRef. It always contains the <code>LocalFieldDesc</code> for the
* field.
* @param getBeforeValue If true, value returned is fetched from beforeImage if false, the value
* returned is fetched from afterImage.
* @return input value corrsponding to given columnRef from given updateDesc.
*/
private static Object getInputValue(
UpdateObjectDescImpl updateDesc, ColumnRef columnRef, boolean getBeforeValue) {
Object value;
LocalFieldDesc field = (LocalFieldDesc) columnRef.getValue();
if (field.isVersion()) {
// Bind the value from the after image for version fields,
// as they're incremented internally after each flush.
// Version fields must not be modified from "outside".
value = updateDesc.getAfterValue(field);
} else {
value = getBeforeValue ? updateDesc.getBeforeValue(field) : updateDesc.getAfterValue(field);
}
return value;
}
private StringBuffer generateColumnText() {
StringBuffer columnList = new StringBuffer();
int numValues = -1;
for (int i = 0; i < columns.size(); i++) {
ColumnRef c = (ColumnRef) columns.get(i);
if (columnList.length() > 0) {
columnList.append(", "); // NOI18N
}
switch (action) {
case QueryPlan.ACT_UPDATE:
appendQuotedText(columnList, c.getName());
columnList.append("= ?"); // NOI18N
break;
case QueryPlan.ACT_INSERT:
appendQuotedText(columnList, c.getName());
if (i == 0) {
values = new StringBuffer().append(" ?"); // NOI18N
} else {
values.append(", ?"); // NOI18N
}
break;
}
// Do not create an InputValue in the case of batch update.
// Method bindInputValues will get the value using the ColumnRef.
if (!batch && ((action == QueryPlan.ACT_UPDATE) || (action == QueryPlan.ACT_INSERT))) {
numValues = numValues + 1;
InputValue val = new InputValue(c.getValue(), c.getColumnElement());
inputDesc.values.add(numValues, val);
}
}
appendVersionColumnUpdateClause(columnList);
return columnList;
}
