Date getEndTime() {
Set<Date> endTimes = new HashSet<Date>();
for (ExprSpec es : exprSpecs) {
if (es.getEndTime() != null) {
endTimes.add(es.getEndTime());
}
}
if (!endTimes.isEmpty()) {
return Collections.min(endTimes);
}
return null;
}
Date getStartTime() {
Set<Date> startTimes = new HashSet<Date>();
for (ExprSpec es : exprSpecs) {
if (es.getStartTime() != null) {
startTimes.add(es.getStartTime());
}
}
if (!startTimes.isEmpty()) {
return Collections.max(startTimes);
}
return null;
}
private void addAllNestedExpressions(
CubeQueryContext cubeql,
ExprSpecContext baseEsc,
AbstractBaseTable baseTable,
Set<ExprSpecContext> nestedExpressions,
Set<String> exprCols)
throws SemanticException {
for (String col : exprCols) {
Set<ExprSpecContext> replacedExpressions = new LinkedHashSet<ExprSpecContext>();
for (ExprSpec es : baseTable.getExpressionByName(col).getExpressionSpecs()) {
ASTNode finalAST = HQLParser.copyAST(baseEsc.getFinalAST());
replaceColumnInAST(finalAST, col, es.getASTNode());
ExprSpecContext replacedESC = new ExprSpecContext(baseEsc, es, finalAST, cubeql);
nestedExpressions.add(replacedESC);
replacedExpressions.add(replacedESC);
}
Set<String> remaining = new LinkedHashSet<String>(exprCols);
remaining.remove(col);
for (ExprSpecContext replacedESC : replacedExpressions) {
addAllNestedExpressions(cubeql, replacedESC, baseTable, nestedExpressions, remaining);
}
}
}
ExprSpecContext(ExprSpec exprSpec, CubeQueryContext cubeql) throws SemanticException {
// replaces table names in expression with aliases in the query
finalAST = replaceAlias(exprSpec.getASTNode(), cubeql);
exprSpecs.add(exprSpec);
}
