vitess.io/vitess@v0.16.2/go/vt/vtgate/planbuilder/primitive_builder.go (about)

     1  /*
     2  Copyright 2019 The Vitess Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package planbuilder
    18  
    19  import (
    20  	"vitess.io/vitess/go/vt/sqlparser"
    21  	"vitess.io/vitess/go/vt/vtgate/planbuilder/plancontext"
    22  )
    23  
    24  // primitiveBuilder is the top level type for building plans.
    25  // It contains the current logicalPlan tree, the symtab and
    26  // the jointab. It can create transient planBuilders due
    27  // to the recursive nature of SQL.
    28  type primitiveBuilder struct {
    29  	vschema plancontext.VSchema
    30  	jt      *jointab
    31  	plan    logicalPlan
    32  	st      *symtab
    33  	stmt    sqlparser.Statement
    34  }
    35  
    36  func newStmtAwarePrimitiveBuilder(vschema plancontext.VSchema, jt *jointab, stmt sqlparser.Statement) *primitiveBuilder {
    37  	return &primitiveBuilder{
    38  		vschema: vschema,
    39  		jt:      jt,
    40  		stmt:    stmt,
    41  	}
    42  }
    43  
    44  func newPrimitiveBuilder(vschema plancontext.VSchema, jt *jointab) *primitiveBuilder {
    45  	return &primitiveBuilder{
    46  		vschema: vschema,
    47  		jt:      jt,
    48  	}
    49  }