程序包 net.wicp.tams.common.flink.connector.kafka.connector

类 KafkaScanFunction

  • 所有已实现的接口:
    Serializable, org.apache.flink.api.common.functions.Function, org.apache.flink.api.common.functions.RichFunction, org.apache.flink.api.java.typeutils.ResultTypeQueryable<org.apache.flink.table.data.RowData>, org.apache.flink.streaming.api.checkpoint.CheckpointedFunction, org.apache.flink.streaming.api.functions.source.SourceFunction<org.apache.flink.table.data.RowData>
    public class KafkaScanFunction
extends org.apache.flink.streaming.api.functions.source.RichSourceFunction<org.apache.flink.table.data.RowData>
implements org.apache.flink.api.java.typeutils.ResultTypeQueryable<org.apache.flink.table.data.RowData>, org.apache.flink.streaming.api.checkpoint.CheckpointedFunction
    不需要CheckpointedFunction,不设置并行度，就是Source默认并行度为cpu core数 此Source不需要设置并行度，在工具类中会跟据patition个数自动启多线程。
    作者:
    Andy.zhou
    另请参阅:
    序列化表格

    • 嵌套类概要

      • 从接口继承的嵌套类/接口 org.apache.flink.streaming.api.functions.source.SourceFunction

        org.apache.flink.streaming.api.functions.source.SourceFunction.SourceContext<T extends Object>

    • 构造器概要

      构造器 
      构造器 说明
      KafkaScanFunction​(org.apache.flink.configuration.Configuration optionsWith, List<org.apache.flink.table.types.logical.RowType.RowField> rowTypeFields, org.apache.flink.table.catalog.UniqueConstraint primaryKey, String tableName, org.apache.flink.api.common.serialization.DeserializationSchema<org.apache.flink.table.data.RowData> deserializationSchema)
      需要在配置文件中存在相关的配置

    • 方法概要

      所有方法 静态方法 实例方法 具体方法 
      修饰符和类型 方法 说明
      void cancel()  
      static int[] createValueFormatProjection​(org.apache.flink.table.types.DataType physicalDataType)  
      org.apache.flink.api.common.typeinfo.TypeInformation<org.apache.flink.table.data.RowData> getProducedType()  
      void initializeState​(org.apache.flink.runtime.state.FunctionInitializationContext context)  
      void open​(org.apache.flink.configuration.Configuration parameters)  
      void run​(org.apache.flink.streaming.api.functions.source.SourceFunction.SourceContext<org.apache.flink.table.data.RowData> ctx)  
      void setRuntimeContext​(org.apache.flink.api.common.functions.RuntimeContext t)  
      void snapshotState​(org.apache.flink.runtime.state.FunctionSnapshotContext context)  

      • 从类继承的方法 org.apache.flink.api.common.functions.AbstractRichFunction

        close, getIterationRuntimeContext, getRuntimeContext

    • 构造器详细资料

      • KafkaScanFunction

        public KafkaScanFunction​(org.apache.flink.configuration.Configuration optionsWith,
                         List<org.apache.flink.table.types.logical.RowType.RowField> rowTypeFields,
                         org.apache.flink.table.catalog.UniqueConstraint primaryKey,
                         String tableName,
                         org.apache.flink.api.common.serialization.DeserializationSchema<org.apache.flink.table.data.RowData> deserializationSchema)
        需要在配置文件中存在相关的配置
        参数:
        optionsWith -
        rowTypeFields -

    • 方法详细资料

      • run

        public void run​(org.apache.flink.streaming.api.functions.source.SourceFunction.SourceContext<org.apache.flink.table.data.RowData> ctx)
         throws Exception
        指定者:
        run 在接口中 org.apache.flink.streaming.api.functions.source.SourceFunction<org.apache.flink.table.data.RowData>
        抛出:
        Exception

      • createValueFormatProjection

        public static int[] createValueFormatProjection​(org.apache.flink.table.types.DataType physicalDataType)

      • cancel

        public void cancel()
        指定者:
        cancel 在接口中 org.apache.flink.streaming.api.functions.source.SourceFunction<org.apache.flink.table.data.RowData>

      • getProducedType

        public org.apache.flink.api.common.typeinfo.TypeInformation<org.apache.flink.table.data.RowData> getProducedType()
        指定者:
        getProducedType 在接口中 org.apache.flink.api.java.typeutils.ResultTypeQueryable<org.apache.flink.table.data.RowData>

      • setRuntimeContext

        public void setRuntimeContext​(org.apache.flink.api.common.functions.RuntimeContext t)
        指定者:
        setRuntimeContext 在接口中 org.apache.flink.api.common.functions.RichFunction
        覆盖:
        setRuntimeContext 在类中 org.apache.flink.api.common.functions.AbstractRichFunction

      • open

        public void open​(org.apache.flink.configuration.Configuration parameters)
          throws Exception
        指定者:
        open 在接口中 org.apache.flink.api.common.functions.RichFunction
        覆盖:
        open 在类中 org.apache.flink.api.common.functions.AbstractRichFunction
        抛出:
        Exception

      • snapshotState

        public void snapshotState​(org.apache.flink.runtime.state.FunctionSnapshotContext context)
                   throws Exception
        指定者:
        snapshotState 在接口中 org.apache.flink.streaming.api.checkpoint.CheckpointedFunction
        抛出:
        Exception

      • initializeState

        public void initializeState​(org.apache.flink.runtime.state.FunctionInitializationContext context)
                     throws Exception
        指定者:
        initializeState 在接口中 org.apache.flink.streaming.api.checkpoint.CheckpointedFunction
        抛出:
        Exception