org.apache.flink.cdc.runtime.operators.transform

类 TransformProjectionProcessor

java.lang.Object

org.apache.flink.cdc.runtime.operators.transform.TransformProjectionProcessor

public class TransformProjectionProcessor
extends Object

The processor of transform projection applies to process a row of filtering tables.

A transform projection processor contains:

• CreateTableEvent: add the user-defined computed columns into Schema.
• SchemaChangeEvent: update the columns of TransformProjection.
• DataChangeEvent: Fill data field to row in PreTransformOperator. Process the data column and the user-defined expression computed columns.

构造器概要

构造器

构造器和说明
TransformProjectionProcessor(PostTransformChangeInfo changeInfo, String projectionExpression, String timezone, List<UserDefinedFunctionDescriptor> udfDescriptors, List<Object> udfFunctionInstances, org.apache.flink.cdc.common.source.SupportedMetadataColumn[] supportedMetadataColumns)

方法概要

限定符和类型	方法和说明
Object[]	project(Object[] rowData, TransformContext context)

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

TransformProjectionProcessor

public TransformProjectionProcessor(PostTransformChangeInfo changeInfo,
                                    String projectionExpression,
                                    String timezone,
                                    List<UserDefinedFunctionDescriptor> udfDescriptors,
                                    List<Object> udfFunctionInstances,
                                    org.apache.flink.cdc.common.source.SupportedMetadataColumn[] supportedMetadataColumns)

方法详细资料

project

public Object[] project(Object[] rowData,
                        TransformContext context)