com.squareup.sqldelight.validation.CreateTriggerValidator.kt Maven / Gradle / Ivy

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There is a newer version: 0.9.0

/*
 * Copyright (C) 2016 Square, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License 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.
 */
package com.squareup.sqldelight.validation

import com.squareup.sqldelight.SqliteParser
import com.squareup.sqldelight.resolution.ResolutionError
import com.squareup.sqldelight.resolution.Resolver
import com.squareup.sqldelight.resolution.resolve
import com.squareup.sqldelight.types.Value
import java.util.ArrayList

internal class CreateTriggerValidator(val resolver: Resolver) {
  fun validate(trigger: SqliteParser.Create_trigger_stmtContext) : List {
    val resolution = resolver.resolve(trigger.table_name())
    val response = ArrayList(resolution.errors)
    response.addAll(trigger.column_name().flatMap { resolver.resolve(resolution.values, it).errors })

    val availableColumns = availableColumns(trigger, resolution.values)

    if (trigger.expr() != null) {
      response.addAll(resolver.withScopedValues(availableColumns).resolve(trigger.expr()).errors)
    }

    response.addAll(trigger.select_stmt().flatMap {
      resolver.resolve(it).errors // This gets us the columns back and validates.
    })

    response.addAll(trigger.insert_stmt().flatMap {
      InsertValidator(resolver, availableColumns).validate(it)
    })

    response.addAll(trigger.delete_stmt().flatMap {
      DeleteValidator(resolver, availableColumns).validate(it)
    })

    response.addAll(trigger.update_stmt().flatMap {
      UpdateValidator(resolver, availableColumns).validate(it)
    })

    return response
  }

  fun availableColumns(
      trigger: SqliteParser.Create_trigger_stmtContext,
      tableValues: List
  ): List {
    if (trigger.K_INSERT() != null) {
      return tableValues + tableValues.map { Value("new", it.columnName, it.type, it.element, null) }
    }
    if (trigger.K_UPDATE() != null) {
      return tableValues + tableValues.flatMap {
        listOf(Value("new", it.columnName, it.type, it.element, null),
            Value("old", it.columnName, it.type, it.element, null))
      }
    }
    if (trigger.K_DELETE() != null) {
      return tableValues + tableValues.map { Value("old", it.columnName, it.type, it.element, null) }
    }

    throw IllegalStateException("Did not know how to handle create trigger statement")
  }
}