//Only called on translated expressions
IHqlExpression * addExpressionModifier(IHqlExpression * expr, typemod_t modifier, IInterface * extra)
{
//Not sure which is best implementation...
#if 1
return createValue(no_typetransfer, makeModifier(expr->getType(), modifier, LINK(extra)), LINK(expr));
#else
HqlExprArray args;
unwindChildren(args, expr);
return createValue(expr->getOperator(), makeModifier(expr->getType(), modifier, LINK(extra)), args);
#endif
}
IHqlExpression * buildDiskFileViewerEcl(const char * logicalName, IHqlExpression * record)
{
//Add filepos to the incomming record structure...
IHqlExpression * filePosAttr = createAttribute(virtualAtom, createAttribute(filepositionAtom));
OwnedHqlExpr filepos = createField(fileposName, makeIntType(8, false), NULL, filePosAttr);
IHqlExpression * sizeofAttr = createAttribute(virtualAtom, createAttribute(sizeofAtom));
OwnedHqlExpr reclen = createField(recordlenName, makeIntType(2, false), NULL, sizeofAttr);
HqlExprArray fields;
unwindChildren(fields, record);
fields.append(*filepos.getLink());
fields.append(*reclen.getLink());
OwnedHqlExpr newRecord = createRecord(fields);
newRecord.setown(createSymbol(createIdentifierAtom("_SourceRecord_"), newRecord.getLink(), ob_private));
OwnedHqlExpr dataset = createNewDataset(createConstant(logicalName), newRecord.getLink(), createValue(no_thor), NULL, NULL, NULL);
OwnedHqlExpr filtered = addFilter(dataset, filepos);
OwnedHqlExpr projected = addSimplifyProject(filtered);
OwnedHqlExpr output = addOutput(projected);
return output.getClear();
}
IHqlExpression * PositionTransformer::createTransformed(IHqlExpression * _expr)
{
OwnedHqlExpr transformed = NewHqlTransformer::createTransformed(_expr);
switch (transformed->getOperator())
{
case no_table:
{
IHqlExpression * mode = transformed->queryChild(2);
HqlExprArray fields;
HqlExprArray args;
if (mode->getOperator() == no_thor)
{
unwindChildren(fields, transformed->queryChild(1));
IHqlExpression * filePosAttr = createComma(createAttribute(virtualAtom, createAttribute(filepositionAtom)), insertedAttr.getLink());
IHqlExpression * sizeofAttr = createComma(createAttribute(virtualAtom, createAttribute(sizeofAtom)), insertedAttr.getLink());
fields.append(*createField(fileposName, makeIntType(8, false), NULL, filePosAttr));
fields.append(*createField(recordlenName, makeIntType(2, false), NULL, sizeofAttr));
unwindChildren(args, transformed);
args.replace(*createRecord(fields), 1);
return transformed->clone(args);
}
}
break;
case no_iterate:
case no_hqlproject:
{
HqlExprArray args;
HqlExprArray assigns;
IHqlExpression * transform = transformed->queryChild(1);
unwindChildren(args, transformed);
unwindChildren(assigns, transform);
IHqlExpression * inRecord = transformed->queryChild(0)->queryRecord();
IHqlExpression * outRecord = transform->queryRecord();
HqlExprArray fields;
unwindChildren(fields, outRecord);
ForEachChild(idx, inRecord)
{
IHqlExpression * child = inRecord->queryChild(idx);
if (child->hasProperty(insertedAtom))
{
IHqlExpression * newTarget = createField(child->queryName(), child->getType(), LINK(child), insertedAttr.getLink());
fields.append(*newTarget);
assigns.append(*createValue(no_assign, makeVoidType(), newTarget, createSelectExpr(createValue(no_left), LINK(newTarget))));
}
}
IHqlExpression * newRecord = createRecord(fields);
args.replace(*createValue(no_transform, newRecord->getType(), assigns), 1);
return transformed->clone(args);
}
break;
case no_join:
//only ok if join first
case no_rollup:
case no_newaggregate:
case no_aggregate:
fail();
break;
case no_usertable:
case no_selectfields:
{
IHqlExpression * grouping = transformed->queryChild(2);
if (grouping && (grouping->getOperator() != no_attr))
fail();
IHqlExpression * record = transformed->queryRecord();
HqlExprArray fields;
unwindChildren(fields, transformed->queryChild(1));
ForEachChild(idx, record)
{
IHqlExpression * child = record->queryChild(idx);
if (child->hasProperty(insertedAtom))
fields.append(*createField(child->queryName(), child->getType(), LINK(child), insertedAttr.getLink()));
}
HqlExprArray args;
unwindChildren(args, transformed);
args.replace(*createRecord(fields), 1);
return transformed->clone(args);
}
