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org.apache.hadoop.hive.ql.parse.PTFTranslator Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hive.ql.parse;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Deque;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Stack;
import org.antlr.runtime.CommonToken;
import org.antlr.runtime.tree.TreeWizard;
import org.antlr.runtime.tree.TreeWizard.ContextVisitor;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.hadoop.hive.ql.ErrorMsg;
import org.apache.hadoop.hive.ql.exec.ColumnInfo;
import org.apache.hadoop.hive.ql.exec.ExprNodeEvaluator;
import org.apache.hadoop.hive.ql.exec.FunctionRegistry;
import org.apache.hadoop.hive.ql.exec.PTFPartition;
import org.apache.hadoop.hive.ql.exec.WindowFunctionInfo;
import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.OrderExpression;
import org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.OrderSpec;
import org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.PTFInputSpec;
import org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.PTFQueryInputSpec;
import org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.PTFQueryInputType;
import org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.PartitionExpression;
import org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.PartitionSpec;
import org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.PartitionedTableFunctionSpec;
import org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.PartitioningSpec;
import org.apache.hadoop.hive.ql.parse.WindowingSpec.BoundarySpec;
import org.apache.hadoop.hive.ql.parse.WindowingSpec.WindowExpressionSpec;
import org.apache.hadoop.hive.ql.parse.WindowingSpec.WindowFrameSpec;
import org.apache.hadoop.hive.ql.parse.WindowingSpec.WindowFunctionSpec;
import org.apache.hadoop.hive.ql.parse.WindowingSpec.WindowSpec;
import org.apache.hadoop.hive.ql.parse.WindowingSpec.WindowType;
import org.apache.hadoop.hive.ql.plan.ExprNodeDesc;
import org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc;
import org.apache.hadoop.hive.ql.plan.PTFDesc;
import org.apache.hadoop.hive.ql.plan.PTFDeserializer;
import org.apache.hadoop.hive.ql.plan.ptf.BoundaryDef;
import org.apache.hadoop.hive.ql.plan.ptf.OrderDef;
import org.apache.hadoop.hive.ql.plan.ptf.OrderExpressionDef;
import org.apache.hadoop.hive.ql.plan.ptf.PTFExpressionDef;
import org.apache.hadoop.hive.ql.plan.ptf.PTFInputDef;
import org.apache.hadoop.hive.ql.plan.ptf.PTFQueryInputDef;
import org.apache.hadoop.hive.ql.plan.ptf.PartitionDef;
import org.apache.hadoop.hive.ql.plan.ptf.PartitionedTableFunctionDef;
import org.apache.hadoop.hive.ql.plan.ptf.ShapeDetails;
import org.apache.hadoop.hive.ql.plan.ptf.WindowFrameDef;
import org.apache.hadoop.hive.ql.plan.ptf.WindowFunctionDef;
import org.apache.hadoop.hive.ql.plan.ptf.WindowTableFunctionDef;
import org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator;
import org.apache.hadoop.hive.ql.udf.generic.GenericUDFLeadLag;
import org.apache.hadoop.hive.ql.udf.ptf.TableFunctionEvaluator;
import org.apache.hadoop.hive.ql.udf.ptf.TableFunctionResolver;
import org.apache.hadoop.hive.ql.udf.ptf.WindowingTableFunction.WindowingTableFunctionResolver;
import org.apache.hadoop.hive.serde2.AbstractSerDe;
import org.apache.hadoop.hive.serde2.SerDeException;
import org.apache.hadoop.hive.serde2.SerDeUtils;
import org.apache.hadoop.hive.serde2.lazybinary.LazyBinarySerDe;
import org.apache.hadoop.hive.serde2.objectinspector.ListObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector.Category;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorFactory;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils;
import org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector.PrimitiveCategory;
import org.apache.hadoop.hive.serde2.objectinspector.StructField;
import org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector;
import org.apache.hadoop.hive.serde2.typeinfo.StructTypeInfo;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfo;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfoUtils;
import com.facebook.presto.hive.$internal.org.slf4j.Logger;
import com.facebook.presto.hive.$internal.org.slf4j.LoggerFactory;
public class PTFTranslator {
private static final Logger LOG = LoggerFactory.getLogger("org.apache.hadoop.hive.ql.parse");
HiveConf hCfg;
LeadLagInfo llInfo;
SemanticAnalyzer semAly;
UnparseTranslator unparseT;
RowResolver inputRR;
PTFDesc ptfDesc;
PTFInvocationSpec ptfInvocation;
WindowingSpec windowingSpec;
private void init(SemanticAnalyzer semAly,
HiveConf hCfg,
RowResolver inputRR,
UnparseTranslator unparseT) {
this.semAly = semAly;
this.hCfg = hCfg;
this.inputRR = inputRR;
this.unparseT = unparseT;
llInfo = new LeadLagInfo();
}
public PTFDesc translate(PTFInvocationSpec qSpec,
SemanticAnalyzer semAly,
HiveConf hCfg,
RowResolver inputRR,
UnparseTranslator unparseT)
throws SemanticException {
init(semAly, hCfg, inputRR, unparseT);
ptfInvocation = qSpec;
ptfDesc = new PTFDesc();
ptfDesc.setCfg(hCfg);
ptfDesc.setLlInfo(llInfo);
translatePTFChain();
PTFDeserializer.alterOutputOIForStreaming(ptfDesc);
return ptfDesc;
}
public PTFDesc translate(WindowingSpec wdwSpec, SemanticAnalyzer semAly, HiveConf hCfg,
RowResolver inputRR,
UnparseTranslator unparseT)
throws SemanticException {
init(semAly, hCfg, inputRR, unparseT);
windowingSpec = wdwSpec;
ptfDesc = new PTFDesc();
ptfDesc.setCfg(hCfg);
ptfDesc.setLlInfo(llInfo);
WindowTableFunctionDef wdwTFnDef = new WindowTableFunctionDef();
ptfDesc.setFuncDef(wdwTFnDef);
PTFQueryInputSpec inpSpec = new PTFQueryInputSpec();
inpSpec.setType(PTFQueryInputType.WINDOWING);
wdwTFnDef.setInput(translate(inpSpec, 0));
ShapeDetails inpShape = wdwTFnDef.getInput().getOutputShape();
WindowingTableFunctionResolver tFn = (WindowingTableFunctionResolver)
FunctionRegistry.getTableFunctionResolver(FunctionRegistry.WINDOWING_TABLE_FUNCTION);
if (tFn == null) {
throw new SemanticException(String.format("Internal Error: Unknown Table Function %s",
FunctionRegistry.WINDOWING_TABLE_FUNCTION));
}
wdwTFnDef.setName(FunctionRegistry.WINDOWING_TABLE_FUNCTION);
wdwTFnDef.setResolverClassName(tFn.getClass().getName());
wdwTFnDef.setAlias("ptf_" + 1);
wdwTFnDef.setExpressionTreeString(null);
wdwTFnDef.setTransformsRawInput(false);
tFn.initialize(hCfg, ptfDesc, wdwTFnDef);
TableFunctionEvaluator tEval = tFn.getEvaluator();
wdwTFnDef.setTFunction(tEval);
wdwTFnDef.setCarryForwardNames(tFn.carryForwardNames());
wdwTFnDef.setRawInputShape(inpShape);
PartitioningSpec partiSpec = wdwSpec.getQueryPartitioningSpec();
if (partiSpec == null) {
throw new SemanticException(
"Invalid use of Windowing: there is no Partitioning associated with Windowing");
}
PartitionDef partDef = translate(inpShape, wdwSpec.getQueryPartitionSpec());
OrderDef ordDef = translate(inpShape, wdwSpec.getQueryOrderSpec(), partDef);
wdwTFnDef.setPartition(partDef);
wdwTFnDef.setOrder(ordDef);
/*
* process Wdw functions
*/
ArrayList windowFunctions = new ArrayList();
if (wdwSpec.getWindowExpressions() != null) {
for (WindowExpressionSpec expr : wdwSpec.getWindowExpressions()) {
if (expr instanceof WindowFunctionSpec) {
WindowFunctionDef wFnDef = translate(wdwTFnDef, (WindowFunctionSpec) expr);
windowFunctions.add(wFnDef);
}
}
wdwTFnDef.setWindowFunctions(windowFunctions);
}
/*
* set outputFromWdwFnProcessing
*/
ArrayList aliases = new ArrayList();
ArrayList fieldOIs = new ArrayList();
for (WindowFunctionDef wFnDef : windowFunctions) {
aliases.add(wFnDef.getAlias());
if (wFnDef.isPivotResult()) {
fieldOIs.add(((ListObjectInspector) wFnDef.getOI()).getListElementObjectInspector());
} else {
fieldOIs.add(wFnDef.getOI());
}
}
PTFTranslator.addInputColumnsToList(inpShape, aliases, fieldOIs);
StructObjectInspector wdwOutOI = ObjectInspectorFactory.getStandardStructObjectInspector(
aliases, fieldOIs);
tFn.setWdwProcessingOutputOI(wdwOutOI);
RowResolver wdwOutRR = buildRowResolverForWindowing(wdwTFnDef);
ShapeDetails wdwOutShape = setupShape(wdwOutOI, null, wdwOutRR);
wdwTFnDef.setOutputShape(wdwOutShape);
tFn.setupOutputOI();
PTFDeserializer.alterOutputOIForStreaming(ptfDesc);
return ptfDesc;
}
private void translatePTFChain() throws SemanticException {
Deque ptfChain = new ArrayDeque();
PTFInputSpec currentSpec = ptfInvocation.getFunction();
while (currentSpec != null) {
ptfChain.push(currentSpec);
currentSpec = currentSpec.getInput();
}
int inputNum = 0;
PTFInputDef currentDef = null;
while (!ptfChain.isEmpty()) {
currentSpec = ptfChain.pop();
if (currentSpec instanceof PTFQueryInputSpec) {
currentDef = translate((PTFQueryInputSpec) currentSpec, inputNum);
}
else {
currentDef = translate((PartitionedTableFunctionSpec) currentSpec,
currentDef,
inputNum);
}
inputNum++;
}
ptfDesc.setFuncDef((PartitionedTableFunctionDef) currentDef);
}
private PTFQueryInputDef translate(PTFQueryInputSpec spec,
int inpNum) throws SemanticException
{
PTFQueryInputDef def = new PTFQueryInputDef();
StructObjectInspector oi = PTFTranslator.getStandardStructOI(inputRR);
ShapeDetails shp = setupShape(oi, null, inputRR);
def.setOutputShape(shp);
def.setType(spec.getType());
def.setAlias(spec.getSource() == null ? "ptf_" + inpNum : spec.getSource());
return def;
}
private PartitionedTableFunctionDef translate(PartitionedTableFunctionSpec spec,
PTFInputDef inpDef,
int inpNum)
throws SemanticException {
TableFunctionResolver tFn = FunctionRegistry.getTableFunctionResolver(spec.getName());
if (tFn == null) {
throw new SemanticException(String.format("Unknown Table Function %s",
spec.getName()));
}
PartitionedTableFunctionDef def = new PartitionedTableFunctionDef();
def.setInput(inpDef);
def.setName(spec.getName());
def.setResolverClassName(tFn.getClass().getName());
def.setAlias(spec.getAlias() == null ? "ptf_" + inpNum : spec.getAlias());
def.setExpressionTreeString(spec.getAstNode().toStringTree());
def.setTransformsRawInput(tFn.transformsRawInput());
/*
* translate args
*/
List args = spec.getArgs();
if (args != null)
{
for (ASTNode expr : args)
{
PTFExpressionDef argDef = null;
try {
argDef = buildExpressionDef(inpDef.getOutputShape(), expr);
} catch (HiveException he) {
throw new SemanticException(he);
}
def.addArg(argDef);
}
}
tFn.initialize(hCfg, ptfDesc, def);
TableFunctionEvaluator tEval = tFn.getEvaluator();
def.setTFunction(tEval);
def.setCarryForwardNames(tFn.carryForwardNames());
tFn.setupRawInputOI();
if (tFn.transformsRawInput()) {
StructObjectInspector rawInOutOI = tEval.getRawInputOI();
List rawInOutColNames = tFn.getRawInputColumnNames();
RowResolver rawInRR = buildRowResolverForPTF(def.getName(),
spec.getAlias(),
rawInOutOI,
rawInOutColNames,
inpDef.getOutputShape().getRr());
ShapeDetails rawInpShape = setupTableFnShape(def.getName(),
inpDef.getOutputShape(),
rawInOutOI,
rawInOutColNames,
rawInRR);
def.setRawInputShape(rawInpShape);
}
else {
def.setRawInputShape(inpDef.getOutputShape());
}
translatePartitioning(def, spec);
tFn.setupOutputOI();
StructObjectInspector outputOI = tEval.getOutputOI();
List outColNames = tFn.getOutputColumnNames();
RowResolver outRR = buildRowResolverForPTF(def.getName(),
spec.getAlias(),
outputOI,
outColNames,
def.getRawInputShape().getRr());
ShapeDetails outputShape = setupTableFnShape(def.getName(),
inpDef.getOutputShape(),
outputOI,
outColNames,
outRR);
def.setOutputShape(outputShape);
def.setReferencedColumns(tFn.getReferencedColumns());
return def;
}
private WindowFunctionDef translate(WindowTableFunctionDef wdwTFnDef,
WindowFunctionSpec spec) throws SemanticException {
WindowFunctionInfo wFnInfo = FunctionRegistry.getWindowFunctionInfo(spec.getName());
if (wFnInfo == null) {
throw new SemanticException(ErrorMsg.INVALID_FUNCTION.getMsg(spec.getName()));
}
WindowFunctionDef def = new WindowFunctionDef();
def.setName(spec.getName());
def.setAlias(spec.getAlias());
def.setDistinct(spec.isDistinct());
def.setExpressionTreeString(spec.getExpression().toStringTree());
def.setStar(spec.isStar());
def.setPivotResult(wFnInfo.isPivotResult());
ShapeDetails inpShape = wdwTFnDef.getRawInputShape();
/*
* translate args
*/
ArrayList args = spec.getArgs();
if (args != null)
{
for (ASTNode expr : args)
{
PTFExpressionDef argDef = null;
try {
argDef = buildExpressionDef(inpShape, expr);
} catch (HiveException he) {
throw new SemanticException(he);
}
def.addArg(argDef);
}
}
if (FunctionRegistry.isRankingFunction(spec.getName())){
setupRankingArgs(wdwTFnDef, def, spec);
}
WindowSpec wdwSpec = spec.getWindowSpec();
if (wdwSpec != null) {
String desc = spec.toString();
WindowFrameDef wdwFrame = translate(spec.getName(), inpShape, wdwSpec);
if (!wFnInfo.isSupportsWindow())
{
BoundarySpec start = wdwSpec.getWindowFrame().getStart();
if (start.getAmt() != BoundarySpec.UNBOUNDED_AMOUNT) {
throw new SemanticException(
String.format("Expecting left window frame boundary for " +
"function %s to be unbounded. Found : %d", desc, start.getAmt()));
}
BoundarySpec end = wdwSpec.getWindowFrame().getEnd();
if (end.getAmt() != BoundarySpec.UNBOUNDED_AMOUNT) {
throw new SemanticException(
String.format("Expecting right window frame boundary for " +
"function %s to be unbounded. Found : %d", desc, start.getAmt()));
}
}
def.setWindowFrame(wdwFrame);
}
try {
setupWdwFnEvaluator(def);
} catch (HiveException he) {
throw new SemanticException(he);
}
return def;
}
private void translatePartitioning(PartitionedTableFunctionDef def,
PartitionedTableFunctionSpec spec)
throws SemanticException {
applyConstantPartition(spec);
if (spec.getPartition() == null) {
return;
}
PartitionDef partDef = translate(def.getRawInputShape(), spec.getPartition());
OrderDef orderDef = translate(def.getRawInputShape(), spec.getOrder(), partDef);
def.setPartition(partDef);
def.setOrder(orderDef);
}
/*
* If this the first PPTF in the chain and there is no partition specified
* then assume the user wants to include the entire input in 1 partition.
*/
private static void applyConstantPartition(PartitionedTableFunctionSpec spec) {
if (spec.getPartition() != null) {
return;
}
PTFInputSpec iSpec = spec.getInput();
if (iSpec instanceof PTFInputSpec) {
PartitionSpec partSpec = new PartitionSpec();
PartitionExpression partExpr = new PartitionExpression();
partExpr.setExpression(new ASTNode(new CommonToken(HiveParser.Number, "0")));
partSpec.addExpression(partExpr);
spec.setPartition(partSpec);
}
}
private PartitionDef translate(ShapeDetails inpShape, PartitionSpec spec)
throws SemanticException {
if (spec == null || spec.getExpressions() == null || spec.getExpressions().size() == 0) {
return null;
}
PartitionDef pDef = new PartitionDef();
for (PartitionExpression pExpr : spec.getExpressions()) {
PTFExpressionDef expDef = translate(inpShape, pExpr);
pDef.addExpression(expDef);
}
return pDef;
}
private PTFExpressionDef translate(ShapeDetails inpShape,
PartitionExpression pExpr) throws SemanticException {
PTFExpressionDef expDef = null;
try {
expDef = buildExpressionDef(inpShape, pExpr.getExpression());
} catch (HiveException he) {
throw new SemanticException(he);
}
PTFTranslator.validateComparable(expDef.getOI(),
String.format("Partition Expression %s is not a comparable expression", pExpr
.getExpression().toStringTree()));
return expDef;
}
private OrderDef translate(ShapeDetails inpShape,
OrderSpec spec,
PartitionDef partitionDef) throws SemanticException {
OrderDef def = new OrderDef();
if (null == spec) {
return def;
}
for (OrderExpression oExpr : spec.getExpressions())
{
OrderExpressionDef oexpDef = translate(inpShape, oExpr);
def.addExpression(oexpDef);
}
return def;
}
private OrderExpressionDef translate(ShapeDetails inpShape,
OrderExpression oExpr)
throws SemanticException {
OrderExpressionDef oexpDef = new OrderExpressionDef();
oexpDef.setOrder(oExpr.getOrder());
oexpDef.setNullOrder(oExpr.getNullOrder());
try {
PTFExpressionDef expDef = buildExpressionDef(inpShape, oExpr.getExpression());
oexpDef.setExpressionTreeString(expDef.getExpressionTreeString());
oexpDef.setExprEvaluator(expDef.getExprEvaluator());
oexpDef.setExprNode(expDef.getExprNode());
oexpDef.setOI(expDef.getOI());
} catch (HiveException he) {
throw new SemanticException(he);
}
PTFTranslator.validateComparable(oexpDef.getOI(),
String.format("Partition Expression %s is not a comparable expression",
oExpr.getExpression().toStringTree()));
return oexpDef;
}
private WindowFrameDef translate(String wFnName, ShapeDetails inpShape, WindowSpec spec)
throws SemanticException {
/*
* Since we componentize Windowing, no need to translate
* the Partition & Order specs of individual WFns.
*/
return translate(inpShape, spec.getWindowFrame(), spec.getOrder().getExpressions());
}
private WindowFrameDef translate(ShapeDetails inpShape,
WindowFrameSpec spec,
List orderExpressions)
throws SemanticException {
if (spec == null) {
return null;
}
BoundarySpec s = spec.getStart();
BoundarySpec e = spec.getEnd();
int cmp = s.compareTo(e);
if (cmp > 0) {
throw new SemanticException(String.format(
"Window range invalid, start boundary is greater than end boundary: %s", spec));
}
WindowFrameDef winFrame = new WindowFrameDef(
spec.getWindowType(),
new BoundaryDef(s.direction, s.getAmt()),
new BoundaryDef(e.direction, e.getAmt()));
if (winFrame.getWindowType() == WindowType.RANGE) {
winFrame.setOrderDef(buildOrderExpressions(inpShape, orderExpressions));
}
return winFrame;
}
/**
* Collect order expressions for RANGE based windowing
* @throws SemanticException
*/
private OrderDef buildOrderExpressions(ShapeDetails inpShape, List orderExpressions)
throws SemanticException {
OrderDef orderDef = new OrderDef();
for (OrderExpression oe : orderExpressions) {
PTFTranslator.validateNoLeadLagInValueBoundarySpec(oe.getExpression());
PTFExpressionDef exprDef = null;
try {
exprDef = buildExpressionDef(inpShape, oe.getExpression());
} catch (HiveException he) {
throw new SemanticException(he);
}
PTFTranslator.validateValueBoundaryExprType(exprDef.getOI());
OrderExpressionDef orderExprDef = new OrderExpressionDef(exprDef);
orderExprDef.setOrder(oe.getOrder());
orderExprDef.setNullOrder(oe.getNullOrder());
orderDef.addExpression(orderExprDef);
}
return orderDef;
}
static void setupWdwFnEvaluator(WindowFunctionDef def) throws HiveException {
List args = def.getArgs();
List argOIs = new ArrayList();
ObjectInspector[] funcArgOIs = null;
if (args != null) {
for (PTFExpressionDef arg : args) {
argOIs.add(arg.getOI());
}
funcArgOIs = new ObjectInspector[args.size()];
funcArgOIs = argOIs.toArray(funcArgOIs);
}
GenericUDAFEvaluator wFnEval = FunctionRegistry.getGenericWindowingEvaluator(def.getName(),
argOIs,
def.isDistinct(), def.isStar());
ObjectInspector OI = wFnEval.init(GenericUDAFEvaluator.Mode.COMPLETE, funcArgOIs);
def.setWFnEval(wFnEval);
def.setOI(OI);
}
private static void validateValueBoundaryExprType(ObjectInspector OI)
throws SemanticException {
if (!OI.getCategory().equals(Category.PRIMITIVE)) {
throw new SemanticException(
String.format(
"Value Boundary expression must be of primitive type. Found: %s",
OI.getTypeName()));
}
PrimitiveObjectInspector pOI = (PrimitiveObjectInspector) OI;
PrimitiveCategory pC = pOI.getPrimitiveCategory();
switch (pC)
{
case BOOLEAN:
case BYTE:
case DOUBLE:
case FLOAT:
case INT:
case LONG:
case SHORT:
case DECIMAL:
case TIMESTAMP:
case TIMESTAMPLOCALTZ:
case DATE:
case STRING:
case VARCHAR:
case CHAR:
break;
default:
throw new SemanticException(
String.format("Primitive type %s not supported in Value Boundary expression",
pC));
}
}
private ShapeDetails setupTableFnShape(String fnName, ShapeDetails inpShape,
StructObjectInspector OI, List columnNames, RowResolver rr)
throws SemanticException {
if (FunctionRegistry.isNoopFunction(fnName)) {
return setupShapeForNoop(inpShape, OI, columnNames, rr);
}
return setupShape(OI, columnNames, rr);
}
private ShapeDetails setupShape(StructObjectInspector OI,
List columnNames,
RowResolver rr) throws SemanticException {
Map serdePropsMap = new LinkedHashMap();
AbstractSerDe serde = null;
ShapeDetails shp = new ShapeDetails();
try {
serde = PTFTranslator.createLazyBinarySerDe(hCfg, OI, serdePropsMap);
StructObjectInspector outOI = PTFPartition.setupPartitionOutputOI(serde, OI);
shp.setOI(outOI);
} catch (SerDeException se) {
throw new SemanticException(se);
}
shp.setRr(rr);
shp.setSerde(serde);
shp.setSerdeClassName(serde.getClass().getName());
shp.setSerdeProps(serdePropsMap);
shp.setColumnNames(columnNames);
TypeCheckCtx tCtx = new TypeCheckCtx(rr);
tCtx.setUnparseTranslator(unparseT);
shp.setTypeCheckCtx(tCtx);
return shp;
}
private ShapeDetails copyShape(ShapeDetails src) {
ShapeDetails dest = new ShapeDetails();
dest.setSerdeClassName(src.getSerdeClassName());
dest.setSerdeProps(src.getSerdeProps());
dest.setColumnNames(src.getColumnNames());
dest.setOI(src.getOI());
dest.setSerde(src.getSerde());
dest.setRr(src.getRr());
dest.setTypeCheckCtx(src.getTypeCheckCtx());
return dest;
}
private ShapeDetails setupShapeForNoop(ShapeDetails inpShape,
StructObjectInspector OI,
List columnNames,
RowResolver rr) throws SemanticException {
ShapeDetails shp = new ShapeDetails();
shp.setRr(rr);
shp.setOI(inpShape.getOI());
shp.setSerde(inpShape.getSerde());
shp.setSerdeClassName(inpShape.getSerde().getClass().getName());
shp.setSerdeProps(inpShape.getSerdeProps());
shp.setColumnNames(columnNames);
TypeCheckCtx tCtx = new TypeCheckCtx(rr);
tCtx.setUnparseTranslator(unparseT);
shp.setTypeCheckCtx(tCtx);
return shp;
}
protected static ArrayList addPartitionExpressionsToOrderList(
ArrayList partCols,
ArrayList orderCols) throws SemanticException {
int numOfPartColumns = 0;
int chkSize = partCols.size();
chkSize = chkSize > orderCols.size() ? orderCols.size() : chkSize;
for (int i = 0; i < chkSize; i++) {
if (orderCols.get(i).getExpression().toStringTree()
.equals(partCols.get(i).getExpression().toStringTree())) {
numOfPartColumns++;
} else {
break;
}
}
if (numOfPartColumns != 0 && numOfPartColumns != partCols.size()) {
List partitionColumnNames = new ArrayList();
for (PartitionExpression partitionExpression : partCols) {
ASTNode column = partitionExpression.getExpression();
if (column != null && column.getChildCount() > 0) {
partitionColumnNames.add(column.getChild(0).getText());
}
}
throw new SemanticException(
String.format(
"all partition columns %s must be in order clause or none should be specified",
partitionColumnNames.toString()));
}
ArrayList combinedOrdExprs = new ArrayList();
if (numOfPartColumns == 0) {
for (PartitionExpression partCol : partCols) {
OrderExpression orderCol = new OrderExpression(partCol);
combinedOrdExprs.add(orderCol);
}
}
combinedOrdExprs.addAll(orderCols);
return combinedOrdExprs;
}
private void setupRankingArgs(WindowTableFunctionDef wdwTFnDef,
WindowFunctionDef wFnDef,
WindowFunctionSpec wSpec)
throws SemanticException {
if (wSpec.getArgs().size() > 0) {
throw new SemanticException("Ranking Functions can take no arguments");
}
OrderDef oDef = wdwTFnDef.getOrder();
List oExprs = oDef.getExpressions();
for (OrderExpressionDef oExpr : oExprs) {
wFnDef.addArg(oExpr);
}
}
/*
* Expr translation helper methods
*/
public PTFExpressionDef buildExpressionDef(ShapeDetails inpShape, ASTNode arg)
throws HiveException {
PTFExpressionDef argDef = new PTFExpressionDef();
ExprNodeDesc exprNode = semAly.genExprNodeDesc(arg, inpShape.getRr(),
inpShape.getTypeCheckCtx());
ExprNodeEvaluator exprEval = WindowingExprNodeEvaluatorFactory.get(llInfo, exprNode);
ObjectInspector oi = initExprNodeEvaluator(exprEval, exprNode, inpShape);
argDef.setExpressionTreeString(arg.toStringTree());
argDef.setExprNode(exprNode);
argDef.setExprEvaluator(exprEval);
argDef.setOI(oi);
return argDef;
}
private ObjectInspector initExprNodeEvaluator(ExprNodeEvaluator exprEval,
ExprNodeDesc exprNode,
ShapeDetails inpShape)
throws HiveException {
ObjectInspector outOI;
outOI = exprEval.initialize(inpShape.getOI());
/*
* if there are any LeadLag functions in this Expression Tree: - setup a
* duplicate Evaluator for the 1st arg of the LLFuncDesc - initialize it
* using the InputInfo provided for this Expr tree - set the duplicate
* evaluator on the LLUDF instance.
*/
List llFuncExprs = llInfo.getLLFuncExprsInTopExpr(exprNode);
if (llFuncExprs != null)
{
for (ExprNodeGenericFuncDesc llFuncExpr : llFuncExprs)
{
ExprNodeDesc firstArg = llFuncExpr.getChildren().get(0);
ExprNodeEvaluator dupExprEval = WindowingExprNodeEvaluatorFactory.get(llInfo, firstArg);
dupExprEval.initialize(inpShape.getOI());
GenericUDFLeadLag llFn = (GenericUDFLeadLag) llFuncExpr.getGenericUDF();
llFn.setExprEvaluator(dupExprEval);
}
}
return outOI;
}
/*
* OI & Serde helper methods
*/
protected static AbstractSerDe createLazyBinarySerDe(Configuration cfg,
StructObjectInspector oi, Map serdePropsMap) throws SerDeException {
serdePropsMap = serdePropsMap == null ? new LinkedHashMap() : serdePropsMap;
PTFDeserializer.addOIPropertiestoSerDePropsMap(oi, serdePropsMap);
AbstractSerDe serDe = new LazyBinarySerDe();
Properties p = new Properties();
p.setProperty(org.apache.hadoop.hive.serde.serdeConstants.LIST_COLUMNS,
serdePropsMap.get(org.apache.hadoop.hive.serde.serdeConstants.LIST_COLUMNS));
p.setProperty(
org.apache.hadoop.hive.serde.serdeConstants.LIST_COLUMN_TYPES,
serdePropsMap.get(org.apache.hadoop.hive.serde.serdeConstants.LIST_COLUMN_TYPES));
SerDeUtils.initializeSerDe(serDe, cfg, p, null);
return serDe;
}
@SuppressWarnings({"unchecked"})
private static ArrayList[] getTypeMap(
StructObjectInspector oi) {
StructTypeInfo t = (StructTypeInfo) TypeInfoUtils
.getTypeInfoFromObjectInspector(oi);
ArrayList fnames = t.getAllStructFieldNames();
ArrayList fields = t.getAllStructFieldTypeInfos();
return new ArrayList[] {fnames, fields};
}
/**
* For each column on the input RR, construct a StructField for it
* OI is constructed using the list of input column names and
* their corresponding OIs.
*
* @param rr
* @return
*/
public static StructObjectInspector getStandardStructOI(RowResolver rr) {
StructObjectInspector oi;
ArrayList colLists = rr.getColumnInfos();
ArrayList structFieldNames = new ArrayList();
ArrayList structFieldObjectInspectors = new ArrayList();
for (ColumnInfo columnInfo : colLists) {
String colName = columnInfo.getInternalName();
ObjectInspector colOI = columnInfo.getObjectInspector();
structFieldNames.add(colName);
structFieldObjectInspectors.add(colOI);
}
oi = ObjectInspectorFactory.getStandardStructObjectInspector(structFieldNames,
structFieldObjectInspectors);
return oi;
}
protected static void validateComparable(ObjectInspector OI, String errMsg)
throws SemanticException {
if (!ObjectInspectorUtils.compareSupported(OI)) {
throw new SemanticException(errMsg);
}
}
private static void addInputColumnsToList(ShapeDetails shape,
ArrayList fieldNames, ArrayList fieldOIs) {
StructObjectInspector OI = shape.getOI();
for (StructField f : OI.getAllStructFieldRefs()) {
fieldNames.add(f.getFieldName());
fieldOIs.add(f.getFieldObjectInspector());
}
}
/*
* RowResolver helper methods
*/
protected static RowResolver buildRowResolverForPTF(String tbFnName, String tabAlias,
StructObjectInspector rowObjectInspector,
List outputColNames, RowResolver inputRR) throws SemanticException {
if (FunctionRegistry.isNoopFunction(tbFnName)) {
return buildRowResolverForNoop(tabAlias, rowObjectInspector, inputRR);
}
RowResolver rwsch = new RowResolver();
List fields = rowObjectInspector.getAllStructFieldRefs();
for (int i = 0; i < fields.size(); i++) {
ColumnInfo colInfo = new ColumnInfo(fields.get(i).getFieldName(),
TypeInfoUtils.getTypeInfoFromObjectInspector(fields.get(i)
.getFieldObjectInspector()),
tabAlias,
false);
rwsch.put(tabAlias, outputColNames.get(i), colInfo);
}
return rwsch;
}
protected RowResolver buildRowResolverForWindowing(WindowTableFunctionDef def)
throws SemanticException {
RowResolver rr = new RowResolver();
HashMap aliasToExprMap = windowingSpec.getAliasToWdwExpr();
/*
* add Window Functions
*/
for (WindowFunctionDef wFnDef : def.getWindowFunctions()) {
ASTNode ast = aliasToExprMap.get(wFnDef.getAlias()).getExpression();
ObjectInspector wFnOI = null;
if (wFnDef.isPivotResult()) {
wFnOI = ((ListObjectInspector) wFnDef.getOI()).getListElementObjectInspector();
}
else {
wFnOI = wFnDef.getOI();
}
ColumnInfo cInfo = new ColumnInfo(wFnDef.getAlias(),
TypeInfoUtils.getTypeInfoFromObjectInspector(wFnOI),
null, true, true);
rr.putExpression(ast, cInfo);
}
RowResolver inpRR = def.getRawInputShape().getRr();
/*
* add columns from inpRR
*/
for (ColumnInfo inpCInfo : inputRR.getColumnInfos()) {
ColumnInfo cInfo = new ColumnInfo(inpCInfo);
ASTNode inExpr = PTFTranslator.getASTNode(inpCInfo, inpRR);
if (inExpr != null) {
rr.putExpression(inExpr, cInfo);
} else {
String[] tabColAlias = inputRR.reverseLookup(inpCInfo.getInternalName());
if (tabColAlias != null) {
rr.put(tabColAlias[0], tabColAlias[1], cInfo);
} else {
rr.put(inpCInfo.getTabAlias(), inpCInfo.getAlias(), cInfo);
}
}
String[] altMapping = inputRR.getAlternateMappings(inpCInfo.getInternalName());
if ( altMapping != null ) {
rr.put(altMapping[0], altMapping[1], cInfo);
}
}
return rr;
}
protected static RowResolver buildRowResolverForNoop(String tabAlias,
StructObjectInspector rowObjectInspector,
RowResolver inputRowResolver) throws SemanticException {
LOG.info("QueryTranslationInfo::getRowResolver invoked on ObjectInspector");
RowResolver rwsch = new RowResolver();
List fields = rowObjectInspector.getAllStructFieldRefs();
for (int i = 0; i < fields.size(); i++) {
StructField field = fields.get(i);
String internalName = field.getFieldName();
String[] tabColAlias = inputRowResolver == null ? null : inputRowResolver
.reverseLookup(internalName);
String colTabAlias = tabColAlias == null ? tabAlias : tabColAlias[0];
String colAlias = tabColAlias == null ? null : tabColAlias[1];
ColumnInfo inpColInfo;
ColumnInfo colInfo;
if (tabColAlias != null) {
inpColInfo = inputRowResolver.get(colTabAlias, colAlias);
} else {
/*
* for the Virtual columns:
* - the internalName is UPPER Case and the alias is lower case
* - since we put them in an OI, the fieldnames became lower cased.
* - so we look in the inputRR for the fieldName as an alias.
*/
inpColInfo = inputRowResolver == null ? null : inputRowResolver
.get(tabAlias, internalName);
colAlias = inpColInfo != null ? inpColInfo.getInternalName() : colAlias;
}
if (inpColInfo != null) {
colInfo = new ColumnInfo(inpColInfo);
colInfo.setTabAlias(tabAlias);
} else {
colInfo = new ColumnInfo(fields.get(i).getFieldName(),
TypeInfoUtils.getTypeInfoFromObjectInspector(fields.get(i)
.getFieldObjectInspector()),
tabAlias,
false);
colAlias = colInfo.getInternalName();
}
ASTNode expr = inputRowResolver == null ? null : PTFTranslator.getASTNode(inpColInfo,
inputRowResolver);
if (expr != null) {
rwsch.putExpression(expr, colInfo);
} else {
rwsch.put(tabAlias, colAlias, colInfo);
}
}
return rwsch;
}
/*
* If the cInfo is for an ASTNode, this function returns the ASTNode that it is for.
*/
public static ASTNode getASTNode(ColumnInfo cInfo, RowResolver rr) throws SemanticException {
for (Map.Entry entry : rr.getExpressionMap().entrySet()) {
ASTNode expr = entry.getValue();
if (rr.getExpression(expr).equals(cInfo)) {
return expr;
}
}
return null;
}
/*
* Utility to visit all nodes in an AST tree.
*/
public static void visit(Object t, ContextVisitor visitor) {
_visit(t, null, 0, visitor);
}
/** Do the recursive work for visit */
private static void _visit(Object t, Object parent, int childIndex, ContextVisitor visitor) {
if (t == null) {
return;
}
visitor.visit(t, parent, childIndex, null);
int n = ParseDriver.adaptor.getChildCount(t);
for (int i = 0; i < n; i++) {
Object child = ParseDriver.adaptor.getChild(t, i);
_visit(child, t, i, visitor);
}
}
public static ArrayList componentize(PTFInvocationSpec ptfInvocation)
throws SemanticException {
ArrayList componentInvocations = new ArrayList();
Stack ptfChain = new Stack();
PTFInputSpec spec = ptfInvocation.getFunction();
while (spec instanceof PartitionedTableFunctionSpec) {
ptfChain.push(spec);
spec = spec.getInput();
}
PartitionedTableFunctionSpec prevFn = (PartitionedTableFunctionSpec) ptfChain.pop();
applyConstantPartition(prevFn);
PartitionSpec partSpec = prevFn.getPartition();
OrderSpec orderSpec = prevFn.getOrder();
if (partSpec == null) {
// oops this should have been caught before trying to componentize
throw new SemanticException(
"No Partitioning specification specified at start of a PTFChain");
}
if (orderSpec == null) {
orderSpec = new OrderSpec(partSpec);
prevFn.setOrder(orderSpec);
}
while (!ptfChain.isEmpty()) {
PartitionedTableFunctionSpec currentFn = (PartitionedTableFunctionSpec) ptfChain.pop();
String fnName = currentFn.getName();
if (!FunctionRegistry.isTableFunction(fnName)) {
throw new SemanticException(ErrorMsg.INVALID_FUNCTION.getMsg(fnName));
}
boolean transformsRawInput = FunctionRegistry.getTableFunctionResolver(fnName)
.transformsRawInput();
/*
* if the current table function has no partition info specified: inherit it from the PTF up
* the chain.
*/
if (currentFn.getPartition() == null) {
currentFn.setPartition(prevFn.getPartition());
if (currentFn.getOrder() == null) {
currentFn.setOrder(prevFn.getOrder());
}
}
/*
* If the current table function has no order info specified;
*/
if (currentFn.getOrder() == null) {
currentFn.setOrder(new OrderSpec(currentFn.getPartition()));
}
if (!currentFn.getPartition().equals(partSpec) ||
!currentFn.getOrder().equals(orderSpec) ||
transformsRawInput) {
PTFInvocationSpec component = new PTFInvocationSpec();
component.setFunction(prevFn);
componentInvocations.add(component);
PTFQueryInputSpec cQInSpec = new PTFQueryInputSpec();
cQInSpec.setType(PTFQueryInputType.PTFCOMPONENT);
currentFn.setInput(cQInSpec);
}
prevFn = currentFn;
partSpec = prevFn.getPartition();
orderSpec = prevFn.getOrder();
}
componentInvocations.add(ptfInvocation);
return componentInvocations;
}
public static void validateNoLeadLagInValueBoundarySpec(ASTNode node)
throws SemanticException {
String errMsg = "Lead/Lag not allowed in ValueBoundary Spec";
TreeWizard tw = new TreeWizard(ParseDriver.adaptor, HiveParser.tokenNames);
ValidateNoLeadLag visitor = new ValidateNoLeadLag(errMsg);
tw.visit(node, HiveParser.TOK_FUNCTION, visitor);
visitor.checkValid();
}
public static class ValidateNoLeadLag implements ContextVisitor {
String errMsg;
boolean throwError = false;
ASTNode errorNode;
public ValidateNoLeadLag(String errMsg) {
this.errMsg = errMsg;
}
@SuppressWarnings("rawtypes")
@Override
public void visit(Object t, Object parent, int childIndex, Map labels) {
ASTNode expr = (ASTNode) t;
ASTNode nameNode = (ASTNode) expr.getChild(0);
if (nameNode.getText().equals(FunctionRegistry.LEAD_FUNC_NAME)
|| nameNode.getText()
.equals(FunctionRegistry.LAG_FUNC_NAME)) {
throwError = true;
errorNode = expr;
}
}
void checkValid() throws SemanticException {
if (throwError) {
throw new SemanticException(errMsg + errorNode.toStringTree());
}
}
}
}
