luchunliang commented on code in PR #10097: URL: https://github.com/apache/inlong/pull/10097#discussion_r1582663790
########## inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/TransformProcessor.java: ########## @@ -0,0 +1,160 @@ +/* + * 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 org.apache.inlong.sdk.transform.process; + +import org.apache.inlong.sdk.transform.decode.CsvSourceDecoder; +import org.apache.inlong.sdk.transform.decode.KvSourceDecoder; +import org.apache.inlong.sdk.transform.decode.SourceData; +import org.apache.inlong.sdk.transform.decode.SourceDecoder; +import org.apache.inlong.sdk.transform.encode.CsvSinkEncoder; +import org.apache.inlong.sdk.transform.encode.DefaultSinkData; +import org.apache.inlong.sdk.transform.encode.KvSinkEncoder; +import org.apache.inlong.sdk.transform.encode.SinkData; +import org.apache.inlong.sdk.transform.encode.SinkEncoder; +import org.apache.inlong.sdk.transform.pojo.CsvSinkInfo; +import org.apache.inlong.sdk.transform.pojo.CsvSourceInfo; +import org.apache.inlong.sdk.transform.pojo.KvSinkInfo; +import org.apache.inlong.sdk.transform.pojo.KvSourceInfo; +import org.apache.inlong.sdk.transform.pojo.SinkInfo; +import org.apache.inlong.sdk.transform.pojo.SourceInfo; +import org.apache.inlong.sdk.transform.pojo.TransformConfig; +import org.apache.inlong.sdk.transform.process.operator.ExpressionOperator; +import org.apache.inlong.sdk.transform.process.operator.OperatorTools; +import org.apache.inlong.sdk.transform.process.parser.ValueParser; + +import com.fasterxml.jackson.core.JsonProcessingException; +import com.fasterxml.jackson.databind.JsonMappingException; +import com.fasterxml.jackson.databind.ObjectMapper; +import net.sf.jsqlparser.JSQLParserException; +import net.sf.jsqlparser.parser.CCJSqlParserManager; +import net.sf.jsqlparser.statement.select.PlainSelect; +import net.sf.jsqlparser.statement.select.Select; +import net.sf.jsqlparser.statement.select.SelectExpressionItem; +import net.sf.jsqlparser.statement.select.SelectItem; +import org.apache.commons.lang3.StringUtils; + +import java.io.StringReader; +import java.nio.charset.Charset; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.Map.Entry; + +/** + * TransformProcessor + * + */ +public class TransformProcessor { + + private TransformConfig config; + private SourceDecoder decoder; + private SinkEncoder encoder; + private Charset srcCharset = Charset.defaultCharset(); + protected Charset sinkCharset = Charset.defaultCharset(); + + private PlainSelect transformSelect; + private ExpressionOperator where; + private Map<String, ValueParser> selectItemMap; + + private ObjectMapper objectMapper = new ObjectMapper(); + + public TransformProcessor(String configString) + throws JsonMappingException, JsonProcessingException, JSQLParserException { + TransformConfig config = this.objectMapper.readValue(configString, TransformConfig.class); + this.init(config); + } + + public TransformProcessor(TransformConfig config) throws JSQLParserException { + this.init(config); + } + + private void init(TransformConfig config) throws JSQLParserException { + this.config = config; + if (!StringUtils.isBlank(config.getSourceInfo().getCharset())) { + this.srcCharset = Charset.forName(config.getSourceInfo().getCharset()); + } + if (!StringUtils.isBlank(config.getSinkInfo().getCharset())) { + this.sinkCharset = Charset.forName(config.getSinkInfo().getCharset()); + } + this.initDecoder(config); + this.initEncoder(config); + this.initTransformSql(); + } + + private void initDecoder(TransformConfig config) { + SourceInfo sourceInfo = config.getSourceInfo(); + if (sourceInfo instanceof CsvSourceInfo) { + this.decoder = new CsvSourceDecoder((CsvSourceInfo) sourceInfo); + } else if (sourceInfo instanceof KvSourceInfo) { + this.decoder = new KvSourceDecoder((KvSourceInfo) sourceInfo); + } + } + + private void initEncoder(TransformConfig config) { + SinkInfo sinkInfo = config.getSinkInfo(); + if (sinkInfo instanceof CsvSinkInfo) { + this.encoder = new CsvSinkEncoder((CsvSinkInfo) sinkInfo); + } else if (sinkInfo instanceof KvSinkInfo) { + this.encoder = new KvSinkEncoder((KvSinkInfo) sinkInfo); + } + } + + private void initTransformSql() throws JSQLParserException { + CCJSqlParserManager parserManager = new CCJSqlParserManager(); + Select select = (Select) parserManager.parse(new StringReader(config.getTransformSql())); + this.transformSelect = (PlainSelect) select.getSelectBody(); + this.where = OperatorTools.buildOperator(this.transformSelect.getWhere()); + List<SelectItem> items = this.transformSelect.getSelectItems(); + this.selectItemMap = new HashMap<>(items.size()); + for (SelectItem item : items) { + if (item instanceof SelectExpressionItem) { + SelectExpressionItem exprItem = (SelectExpressionItem) item; + if (exprItem.getAlias() == null) { + this.selectItemMap.put(exprItem.toString(), + OperatorTools.buildParser(exprItem.getExpression())); + } else { + this.selectItemMap.put(exprItem.getAlias().getName(), + OperatorTools.buildParser(exprItem.getExpression())); + } + } + } + } + + public List<String> transform(byte[] srcBytes, Map<String, Object> extParams) { + SourceData sourceData = this.decoder.decode(srcBytes, extParams); + List<String> sinkDatas = new ArrayList<>(sourceData.getRowCount()); + for (int i = 1; i <= sourceData.getRowCount(); i++) { + if (!this.where.check(sourceData, i)) { Review Comment: Fixed -- This is an automated message from the Apache Git Service. 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