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[v1][wip] Add v1 ast -> plan conversion; hook up w/ existing code
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2 changes: 1 addition & 1 deletion
2
partiql-planner/src/main/kotlin/org/partiql/planner/PartiQLPlanner.kt
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75 changes: 75 additions & 0 deletions
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partiql-planner/src/main/kotlin/org/partiql/planner/internal/transforms/V1AstToPlan.kt
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"). | ||
| * You may not use this file except in compliance with the License. | ||
| * A copy of the License is located at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * or in the "license" file accompanying this file. This file is distributed | ||
| * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either | ||
| * express or implied. See the License for the specific language governing | ||
| * permissions and limitations under the License. | ||
| * | ||
| */ | ||
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| package org.partiql.planner.internal.transforms | ||
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| import org.partiql.ast.v1.AstNode | ||
| import org.partiql.ast.v1.AstVisitor | ||
| import org.partiql.ast.v1.Query | ||
| import org.partiql.ast.v1.expr.ExprQuerySet | ||
| import org.partiql.planner.internal.Env | ||
| import org.partiql.planner.internal.ir.statementQuery | ||
| import org.partiql.spi.catalog.Identifier | ||
| import org.partiql.ast.v1.Identifier as AstIdentifier | ||
| import org.partiql.ast.v1.IdentifierChain as AstIdentifierChain | ||
| import org.partiql.ast.v1.Statement as AstStatement | ||
| import org.partiql.planner.internal.ir.Statement as PlanStatement | ||
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| /** | ||
| * Simple translation from AST to an unresolved algebraic IR. | ||
| */ | ||
| internal object V1AstToPlan { | ||
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| // statement.toPlan() | ||
| @JvmStatic | ||
| fun apply(statement: AstStatement, env: Env): PlanStatement = statement.accept(ToPlanStatement, env) | ||
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| @Suppress("PARAMETER_NAME_CHANGED_ON_OVERRIDE") | ||
| private object ToPlanStatement : AstVisitor<PlanStatement, Env> { | ||
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| override fun defaultReturn(node: AstNode, env: Env) = throw IllegalArgumentException("Unsupported statement") | ||
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| override fun visitQuery(node: Query, env: Env): PlanStatement { | ||
| val rex = when (val expr = node.expr) { | ||
| is ExprQuerySet -> V1RelConverter.apply(expr, env) | ||
| else -> V1RexConverter.apply(expr, env) | ||
| } | ||
| return statementQuery(rex) | ||
| } | ||
| } | ||
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| // --- Helpers -------------------- | ||
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| fun convert(identifier: AstIdentifierChain): Identifier { | ||
| val parts = mutableListOf<Identifier.Part>() | ||
| parts.add(part(identifier.root)) | ||
| var curStep = identifier.next | ||
| while (curStep != null) { | ||
| parts.add(part(curStep.root)) | ||
| curStep = curStep.next | ||
| } | ||
| return Identifier.of(parts) | ||
| } | ||
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| fun convert(identifier: AstIdentifier): Identifier { | ||
| return Identifier.of(part(identifier)) | ||
| } | ||
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| fun part(identifier: AstIdentifier): Identifier.Part = when (identifier.isDelimited) { | ||
| true -> Identifier.Part.delimited(identifier.symbol) | ||
| false -> Identifier.Part.regular(identifier.symbol) | ||
| } | ||
| } |
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