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

类 TransformContext

java.lang.Object

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

public class TransformContext
extends Object

Contextual information during Post-transform phase.

字段概要

字段

限定符和类型	字段和说明
long	epochTime
Map<String,String>	meta
String	opType

构造器概要

构造器

构造器和说明
TransformContext()

方法概要

限定符和类型	方法和说明
static Object	lookupObjectByName(String name, PostTransformChangeInfo tableInfo, Map<String,org.apache.flink.cdc.common.source.SupportedMetadataColumn> supportedMetadataColumns, Object[] preRow, Object[] postRow, TransformContext context) Retrieve a corresponding object based on identifier name.

从类继承的方法 java.lang.Object

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

字段详细资料

epochTime

public long epochTime

opType

public String opType

meta

public Map<String,String> meta

构造器详细资料

TransformContext

public TransformContext()

方法详细资料

lookupObjectByName

public static Object lookupObjectByName(String name,
                                        PostTransformChangeInfo tableInfo,
                                        Map<String,org.apache.flink.cdc.common.source.SupportedMetadataColumn> supportedMetadataColumns,
                                        Object[] preRow,
                                        @Nullable
                                        Object[] postRow,
                                        TransformContext context)

Retrieve a corresponding object based on identifier name. The lookup order would be:
1. Built-in metadata column names;
2. Source-provided metadata column names;
3. Calculated column names (which may shade original columns);
4. Existing upstream column names.
If given name is nowhere to be found, an exception will be thrown.