Examples with CubeFilter io.hetu.core.spi.cube.CubeFilter used on opensource projects

Example 6 with CubeFilter

use of io.hetu.core.spi.cube.CubeFilter in project hetu-core by openlookeng.

the class CubeFinishOperator method mergePredicates.

private CubeFilter mergePredicates(CubeFilter existing, String newPredicateString) {
    String sourceTablePredicate = existing == null ? null : existing.getSourceTablePredicate();
    if (newPredicateString == null && sourceTablePredicate == null) {
        return null;
    } else if (newPredicateString == null) {
        return new CubeFilter(sourceTablePredicate, null);
    }
    SqlParser sqlParser = new SqlParser();
    Expression newPredicate = sqlParser.createExpression(newPredicateString, new ParsingOptions());
    if (!updateMetadata.isOverwrite() && existing != null && existing.getCubePredicate() != null) {
        newPredicate = ExpressionUtils.or(sqlParser.createExpression(existing.getCubePredicate(), new ParsingOptions()), newPredicate);
    }
    // Merge new data predicate with existing predicate string
    CubeRangeCanonicalizer canonicalizer = new CubeRangeCanonicalizer(metadata, session, types);
    newPredicate = canonicalizer.mergePredicates(newPredicate);
    String formatExpression = newPredicate.equals(BooleanLiteral.TRUE_LITERAL) ? null : ExpressionFormatter.formatExpression(newPredicate, Optional.empty());
    return formatExpression == null && sourceTablePredicate == null ? null : new CubeFilter(sourceTablePredicate, formatExpression);
}