Examples with Expression org.apache.phoenix.expression.Expression used on opensource projects

Example 1 with Expression

use of org.apache.phoenix.expression.Expression in project phoenix by apache.

the class ExpressionCompiler method visitLeave.

@Override
public Expression visitLeave(NotParseNode node, List<Expression> children) throws SQLException {
    ParseNode childNode = node.getChildren().get(0);
    Expression child = children.get(0);
    if (!PBoolean.INSTANCE.isCoercibleTo(child.getDataType())) {
        throw TypeMismatchException.newException(PBoolean.INSTANCE, child.getDataType(), node.toString());
    }
    if (childNode instanceof BindParseNode) {
        // TODO: valid/possibe?
        context.getBindManager().addParamMetaData((BindParseNode) childNode, child);
    }
    return wrapGroupByExpression(NotExpression.create(child, context.getTempPtr()));
}

Example 2 with Expression

use of org.apache.phoenix.expression.Expression in project phoenix by apache.

the class ExpressionCompiler method visit.

@Override
public Expression visit(ColumnParseNode node) throws SQLException {
    ColumnRef ref = resolveColumn(node);
    TableRef tableRef = ref.getTableRef();
    ImmutableBytesWritable ptr = context.getTempPtr();
    PColumn column = ref.getColumn();
    // query would become degenerate.
    if (!resolveViewConstants && IndexUtil.getViewConstantValue(column, ptr)) {
        return LiteralExpression.newConstant(column.getDataType().toObject(ptr), column.getDataType());
    }
    if (tableRef.equals(context.getCurrentTable()) && !SchemaUtil.isPKColumn(column)) {
        // project only kv columns
        addColumn(column);
    }
    Expression expression = ref.newColumnExpression(node.isTableNameCaseSensitive(), node.isCaseSensitive());
    Expression wrappedExpression = wrapGroupByExpression(expression);
    // This catches cases like this: SELECT sum(a_integer) + a_integer FROM atable GROUP BY a_string
    if (isAggregate && aggregateFunction == null && wrappedExpression == expression) {
        throwNonAggExpressionInAggException(expression.toString());
    }
    return wrappedExpression;
}

Example 3 with Expression

use of org.apache.phoenix.expression.Expression in project phoenix by apache.

the class ExpressionCompiler method visitLeave.

@Override
public Expression visitLeave(ComparisonParseNode node, List<Expression> children) throws SQLException {
    ParseNode lhsNode = node.getChildren().get(0);
    ParseNode rhsNode = node.getChildren().get(1);
    Expression lhsExpr = children.get(0);
    Expression rhsExpr = children.get(1);
    CompareOp op = node.getFilterOp();
    if (lhsNode instanceof RowValueConstructorParseNode && rhsNode instanceof RowValueConstructorParseNode) {
        int i = 0;
        for (; i < Math.min(lhsExpr.getChildren().size(), rhsExpr.getChildren().size()); i++) {
            addBindParamMetaData(lhsNode.getChildren().get(i), rhsNode.getChildren().get(i), lhsExpr.getChildren().get(i), rhsExpr.getChildren().get(i));
        }
        for (; i < lhsExpr.getChildren().size(); i++) {
            addBindParamMetaData(lhsNode.getChildren().get(i), null, lhsExpr.getChildren().get(i), null);
        }
        for (; i < rhsExpr.getChildren().size(); i++) {
            addBindParamMetaData(null, rhsNode.getChildren().get(i), null, rhsExpr.getChildren().get(i));
        }
    } else if (lhsExpr instanceof RowValueConstructorExpression) {
        addBindParamMetaData(lhsNode.getChildren().get(0), rhsNode, lhsExpr.getChildren().get(0), rhsExpr);
        for (int i = 1; i < lhsExpr.getChildren().size(); i++) {
            addBindParamMetaData(lhsNode.getChildren().get(i), null, lhsExpr.getChildren().get(i), null);
        }
    } else if (rhsExpr instanceof RowValueConstructorExpression) {
        addBindParamMetaData(lhsNode, rhsNode.getChildren().get(0), lhsExpr, rhsExpr.getChildren().get(0));
        for (int i = 1; i < rhsExpr.getChildren().size(); i++) {
            addBindParamMetaData(null, rhsNode.getChildren().get(i), null, rhsExpr.getChildren().get(i));
        }
    } else {
        addBindParamMetaData(lhsNode, rhsNode, lhsExpr, rhsExpr);
    }
    return wrapGroupByExpression(ComparisonExpression.create(op, children, context.getTempPtr(), context.getCurrentTable().getTable().rowKeyOrderOptimizable()));
}

Example 4 with Expression

use of org.apache.phoenix.expression.Expression in project phoenix by apache.

the class ExpressionCompiler method orExpression.

private Expression orExpression(List<Expression> children) throws SQLException {
    Iterator<Expression> iterator = children.iterator();
    Determinism determinism = Determinism.ALWAYS;
    while (iterator.hasNext()) {
        Expression child = iterator.next();
        if (child.getDataType() != PBoolean.INSTANCE) {
            throw TypeMismatchException.newException(PBoolean.INSTANCE, child.getDataType(), child.toString());
        }
        if (LiteralExpression.isFalse(child)) {
            iterator.remove();
        }
        if (LiteralExpression.isTrue(child)) {
            return child;
        }
        determinism = determinism.combine(child.getDeterminism());
    }
    if (children.size() == 0) {
        return LiteralExpression.newConstant(false, determinism);
    }
    if (children.size() == 1) {
        return children.get(0);
    }
    return new OrExpression(children);
}

Example 5 with Expression

use of org.apache.phoenix.expression.Expression in project phoenix by apache.

the class FromCompiler method getResolverForCompiledDerivedTable.

public static ColumnResolver getResolverForCompiledDerivedTable(PhoenixConnection connection, TableRef tableRef, RowProjector projector) throws SQLException {
    List<PColumn> projectedColumns = new ArrayList<PColumn>();
    PTable table = tableRef.getTable();
    for (PColumn column : table.getColumns()) {
        Expression sourceExpression = projector.getColumnProjector(column.getPosition()).getExpression();
        PColumnImpl projectedColumn = new PColumnImpl(column.getName(), column.getFamilyName(), sourceExpression.getDataType(), sourceExpression.getMaxLength(), sourceExpression.getScale(), sourceExpression.isNullable(), column.getPosition(), sourceExpression.getSortOrder(), column.getArraySize(), column.getViewConstant(), column.isViewReferenced(), column.getExpressionStr(), column.isRowTimestamp(), column.isDynamic(), column.getColumnQualifierBytes());
        projectedColumns.add(projectedColumn);
    }
    PTable t = PTableImpl.makePTable(table, projectedColumns);
    return new SingleTableColumnResolver(connection, new TableRef(tableRef.getTableAlias(), t, tableRef.getLowerBoundTimeStamp(), tableRef.hasDynamicCols()));
}