streaming.dsl.ConnectAdaptor.scala Maven / Gradle / Ivy
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 streaming.dsl
import streaming.core.datasource.DataSourceRegistry
import streaming.dsl.parser.DSLSQLParser._
import streaming.dsl.template.TemplateMerge
/**
* Created by allwefantasy on 27/8/2017.
*/
class ConnectAdaptor(scriptSQLExecListener: ScriptSQLExecListener) extends DslAdaptor {
def evaluate(value: String) = {
TemplateMerge.merge(value, scriptSQLExecListener.env().toMap)
}
override def parse(ctx: SqlContext): Unit = {
var option = Map[String, String]()
var format = ""
(0 to ctx.getChildCount() - 1).foreach { tokenIndex =>
ctx.getChild(tokenIndex) match {
case s: FormatContext =>
format = s.getText
option += ("format" -> format)
case s: ExpressionContext =>
option += (cleanStr(s.qualifiedName().getText) -> evaluate(getStrOrBlockStr(s)))
case s: BooleanExpressionContext =>
option += (cleanStr(s.expression().qualifiedName().getText) -> evaluate(getStrOrBlockStr(s.expression())))
case s: DbContext =>
DataSourceRegistry.findAllNames(format).map { names =>
names.foreach { name => ConnectMeta.options(DBMappingKey(name, s.getText), option) }
}.getOrElse {
ConnectMeta.options(DBMappingKey(format, s.getText), option)
}
case _ =>
}
}
scriptSQLExecListener.setLastSelectTable(null)
}
}