Examples with WindowFrameDef com.sap.hadoop.windowing.query2.definition.WindowFrameDef used on opensource projects

Example 1 with WindowFrameDef

use of com.sap.hadoop.windowing.query2.definition.WindowFrameDef in project SQLWindowing by hbutani.

the class WindowSpecTranslation method translateWindowSpecOnInput.

/*
	 * <ol>
	 * <li> If wSpec points to a source WindowSpec. Validate that it is valid. If it hasn't been already translated then translate it.
	 * <li> Start with an empty WdwDef or a cloned WdwDef from the source WdwDef.
	 * <li> translate the PartitionSpec if it exists. Replace the existing PDef with this; also remove the OrderDef.
	 * <li> translate the OrderSpec if it exists. Replace existing OrderDef with this.
	 * <li> add in Partition Columns if not in OrderDef already.
	 * <li> translate the WindowSpec if it exists. Replace existing WdwDef with it.
	 * <li> If name is non-null add this def to TranslationInfo::nameToWdwDef map.
	 * </ol>
	 */
static WindowDef translateWindowSpecOnInput(QueryDef qDef, WindowSpec wSpec, InputInfo iInfo, String inputDesc) throws WindowingException {
    QuerySpec qSpec = qDef.getSpec();
    WindowDef wDef;
    fillInWindowSpec(qSpec, wSpec.getSourceId(), wSpec);
    wDef = new WindowDef(wSpec);
    PartitionSpec pSpec = wSpec.getPartition();
    OrderSpec oSpec = wSpec.getOrder();
    WindowFrameSpec wFrameSpec = wSpec.getWindow();
    PartitionDef pDef = translatePartition(qDef, iInfo, pSpec);
    OrderDef oDef = translateOrder(qDef, inputDesc, iInfo, oSpec, pDef);
    WindowFrameDef wdwDef = translateWindowFrame(qDef, wFrameSpec, iInfo);
    wDef.setPartDef(pDef);
    wDef.setOrderDef(oDef);
    wDef.setWindow(wdwDef);
    return wDef;
}

Example 2 with WindowFrameDef

use of com.sap.hadoop.windowing.query2.definition.WindowFrameDef in project SQLWindowing by hbutani.

the class WindowSpecTranslation method translateWindowFrame.

static WindowFrameDef translateWindowFrame(QueryDef qDef, WindowFrameSpec wfSpec, InputInfo iInfo) throws WindowingException {
    if (wfSpec == null) {
        return null;
    }
    BoundarySpec s = wfSpec.getStart();
    BoundarySpec e = wfSpec.getEnd();
    WindowFrameDef wfDef = new WindowFrameDef(wfSpec);
    wfDef.setStart(translateBoundary(qDef, s, iInfo));
    wfDef.setEnd(translateBoundary(qDef, e, iInfo));
    int cmp = s.compareTo(e);
    if (cmp > 0) {
        throw new WindowingException(sprintf("Window range invalid, start boundary is greater than end boundary: %s", wfSpec));
    }
    return wfDef;
}

Example 3 with WindowFrameDef

use of com.sap.hadoop.windowing.query2.definition.WindowFrameDef in project SQLWindowing by hbutani.

the class QueryDefWalker method walk.

/**
	 * Visit the partition columns and order columns 
	 * Visit the window frame definitions
	 * @param window
	 * @throws WindowingException
	 */
protected void walk(WindowDef window) throws WindowingException {
    if (window == null)
        return;
    PartitionDef pDef = window.getPartDef();
    if (pDef != null) {
        ArrayList<ColumnDef> cols = pDef.getColumns();
        for (ColumnDef col : cols) {
            visitor.visit(col);
        }
        visitor.visit(pDef);
    }
    OrderDef oDef = window.getOrderDef();
    if (oDef != null) {
        ArrayList<OrderColumnDef> ocols = oDef.getColumns();
        for (OrderColumnDef ocol : ocols) {
            visitor.visit(ocol);
        }
        visitor.visit(oDef);
    }
    WindowFrameDef wFrmDef = window.getWindow();
    if (wFrmDef != null) {
        walk(wFrmDef.getStart());
        walk(wFrmDef.getEnd());
        visitor.visit(wFrmDef);
    }
    visitor.visit(window);
}