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8f4dc0f2f0
Float/Doubles are lossy so using those as the default literal type is problematic. Change-Id: I5a619dd931d576e2e6cd7774139e9bafb9452db9 Reviewed-on: http://gerrit.ent.cloudera.com:8080/2758 Reviewed-by: Nong Li <nong@cloudera.com> Tested-by: jenkins
138 lines
3.1 KiB
Thrift
138 lines
3.1 KiB
Thrift
// Copyright 2012 Cloudera Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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namespace cpp impala
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namespace java com.cloudera.impala.thrift
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include "Types.thrift"
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enum TExprNodeType {
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ARITHMETIC_EXPR,
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BINARY_PRED,
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BOOL_LITERAL,
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CASE_EXPR,
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CAST_EXPR,
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COMPOUND_PRED,
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DATE_LITERAL,
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FLOAT_LITERAL,
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INT_LITERAL,
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IN_PRED,
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IS_NULL_PRED,
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LIKE_PRED,
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LITERAL_PRED,
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NULL_LITERAL,
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SLOT_REF,
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STRING_LITERAL,
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TUPLE_IS_NULL_PRED,
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FUNCTION_CALL,
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AGGREGATE_EXPR,
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// TODO: old style compute functions. this will be deprecated
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COMPUTE_FUNCTION_CALL,
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DECIMAL_LITERAL,
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}
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struct TBoolLiteral {
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1: required bool value
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}
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struct TCaseExpr {
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1: required bool has_case_expr
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2: required bool has_else_expr
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}
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struct TDateLiteral {
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1: required Types.TTimestamp value
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}
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struct TDecimalLiteral {
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// Value of the unscaled decimal in two's complement big endian
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// i.e. BigInteger.getBytes()
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1: required binary value
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}
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struct TFloatLiteral {
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1: required double value
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}
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struct TIntLiteral {
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1: required i64 value
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}
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struct TInPredicate {
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1: required bool is_not_in
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}
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struct TIsNullPredicate {
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1: required bool is_not_null
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}
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struct TLikePredicate {
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1: required string escape_char;
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}
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struct TLiteralPredicate {
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1: required bool value
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2: required bool is_null
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}
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struct TTupleIsNullPredicate {
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1: required list<Types.TTupleId> tuple_ids
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}
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struct TSlotRef {
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1: required Types.TSlotId slot_id
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}
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struct TStringLiteral {
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1: required string value;
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}
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// This is essentially a union over the subclasses of Expr.
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struct TExprNode {
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1: required TExprNodeType node_type
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2: required Types.TColumnType type
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3: required i32 num_children
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// The function to execute. Not set for SlotRefs and Literals.
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4: optional Types.TFunction fn
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// If set, child[vararg_start_idx] is the first vararg child.
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5: optional i32 vararg_start_idx
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6: optional TBoolLiteral bool_literal
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7: optional TCaseExpr case_expr
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8: optional TDateLiteral date_literal
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9: optional TFloatLiteral float_literal
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10: optional TIntLiteral int_literal
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11: optional TInPredicate in_predicate
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12: optional TIsNullPredicate is_null_pred
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13: optional TLikePredicate like_pred
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14: optional TLiteralPredicate literal_pred
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15: optional TSlotRef slot_ref
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16: optional TStringLiteral string_literal
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17: optional TTupleIsNullPredicate tuple_is_null_pred
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18: optional TDecimalLiteral decimal_literal
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}
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// A flattened representation of a tree of Expr nodes, obtained by depth-first
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// traversal.
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struct TExpr {
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1: required list<TExprNode> nodes
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}
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// A list of TExprs
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struct TExprBatch {
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1: required list<TExpr> exprs
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}
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