| /** |
| * 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.lens.cube.parse; |
| |
| import java.util.*; |
| |
| import org.apache.lens.cube.metadata.MetastoreConstants; |
| import org.apache.lens.cube.metadata.TimeRange; |
| import org.apache.lens.server.api.error.LensException; |
| |
| import org.apache.commons.lang.StringUtils; |
| import org.apache.hadoop.hive.ql.parse.ASTNode; |
| |
| import lombok.Data; |
| import lombok.EqualsAndHashCode; |
| import lombok.NonNull; |
| import lombok.extern.slf4j.Slf4j; |
| |
| @Data |
| @EqualsAndHashCode(callSuper = true) |
| @Slf4j |
| class QueriedPhraseContext extends TracksQueriedColumns implements TrackQueriedCubeFields { |
| // position in org.apache.lens.cube.parse.CubeQueryContext.queriedPhrases |
| private int position; |
| private final ASTNode exprAST; |
| private Boolean aggregate; |
| private String expr; |
| private final Set<String> queriedDimAttrs = new HashSet<>(); |
| private final Set<String> queriedMsrs = new HashSet<>(); |
| private final Set<String> queriedExprColumns = new HashSet<>(); |
| private final Set<String> columns = new HashSet<>(); |
| |
| void setNotAggregate() { |
| this.aggregate = false; |
| } |
| |
| boolean isAggregate() { |
| if (aggregate == null) { |
| aggregate = HQLParser.hasAggregate(exprAST); |
| } |
| return aggregate; |
| } |
| |
| String getExpr() { |
| if (expr == null) { |
| expr = HQLParser.getString(getExprAST()).trim(); |
| } |
| return expr; |
| } |
| |
| void updateExprs() { |
| expr = HQLParser.getString(getExprAST()).trim(); |
| } |
| |
| @Override |
| public void addQueriedDimAttr(String attrName) { |
| queriedDimAttrs.add(attrName); |
| columns.add(attrName); |
| } |
| |
| @Override |
| public void addQueriedMsr(String msrName) { |
| queriedMsrs.add(msrName); |
| columns.add(msrName); |
| } |
| |
| @Override |
| public void addQueriedExprColumn(String exprCol) { |
| queriedExprColumns.add(exprCol); |
| columns.add(exprCol); |
| } |
| |
| public boolean hasMeasures(CubeQueryContext cubeQl) { |
| if (!queriedMsrs.isEmpty()) { |
| return true; |
| } |
| if (!queriedExprColumns.isEmpty()) { |
| for (String exprCol : queriedExprColumns) { |
| if (cubeQl.getQueriedExprsWithMeasures().contains(exprCol)) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * @param cubeQl |
| * @param sc |
| * @return |
| * @throws LensException |
| */ |
| public boolean isEvaluable(CubeQueryContext cubeQl, StorageCandidate sc) throws LensException { |
| // all measures of the queried phrase should be present |
| for (String msr : queriedMsrs) { |
| if (!checkForColumnExistsAndValidForRange(sc, msr, cubeQl)) { |
| return false; |
| } |
| } |
| // all expression columns should be evaluable |
| for (String exprCol : queriedExprColumns) { |
| if (!cubeQl.getExprCtx().isEvaluable(exprCol, sc)) { |
| log.info("expression {} is not evaluable in fact table:{}", expr, sc); |
| return false; |
| } |
| } |
| // all dim-attributes should be present. |
| for (String col : queriedDimAttrs) { |
| if (!sc.getColumns().contains(col.toLowerCase())) { |
| // check if it available as reference |
| if (!cubeQl.getDeNormCtx().addRefUsage(cubeQl, sc, col, cubeQl.getCube().getName())) { |
| log.info("column {} is not available in fact table:{} ", col, sc); |
| return false; |
| } |
| } else if (!isFactColumnValidForRange(cubeQl, sc, col)) { |
| log.info("column {} is not available in range queried in fact {}", col, sc); |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| private static boolean isColumnAvailableInRange(final TimeRange range, Date startTime, Date endTime) { |
| return (isColumnAvailableFrom(range.getFromDate(), startTime) |
| && isColumnAvailableTill(range.getToDate(), endTime)); |
| } |
| |
| private static boolean isColumnAvailableFrom(@NonNull final Date date, Date startTime) { |
| return (startTime == null) || date.equals(startTime) || date.after(startTime); |
| } |
| |
| private static boolean isColumnAvailableTill(@NonNull final Date date, Date endTime) { |
| return (endTime == null) || date.equals(endTime) || date.before(endTime); |
| } |
| |
| public static boolean isFactColumnValidForRange(CubeQueryContext cubeql, StorageCandidate sc, String col) { |
| for (TimeRange range : cubeql.getTimeRanges()) { |
| if (!isColumnAvailableInRange(range, getFactColumnStartTime(sc, col), getFactColumnEndTime(sc, col))) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| public static Date getFactColumnStartTime(StorageCandidate sc, String factCol) { |
| Date startTime = null; |
| for (String key : sc.getTable().getProperties().keySet()) { |
| if (key.contains(MetastoreConstants.FACT_COL_START_TIME_PFX)) { |
| String propCol = StringUtils.substringAfter(key, MetastoreConstants.FACT_COL_START_TIME_PFX); |
| if (factCol.equals(propCol)) { |
| startTime = sc.getTable().getDateFromProperty(key, false, true); |
| } |
| } |
| } |
| return startTime; |
| } |
| |
| public static Date getFactColumnEndTime(StorageCandidate sc, String factCol) { |
| Date endTime = null; |
| for (String key : sc.getTable().getProperties().keySet()) { |
| if (key.contains(MetastoreConstants.FACT_COL_END_TIME_PFX)) { |
| String propCol = StringUtils.substringAfter(key, MetastoreConstants.FACT_COL_END_TIME_PFX); |
| if (factCol.equals(propCol)) { |
| endTime = sc.getTable().getDateFromProperty(key, false, true); |
| } |
| } |
| } |
| return endTime; |
| } |
| |
| static boolean checkForColumnExistsAndValidForRange(StorageCandidate sc, String column, CubeQueryContext cubeql) { |
| return (sc.getColumns().contains(column) && isFactColumnValidForRange(cubeql, sc, column)); |
| } |
| |
| } |