public class IntervalJoinFunction extends RichFlatJoinFunction<RowData,RowData,RowData> implements ResultTypeQueryable<RowData>
Constructor and Description |
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IntervalJoinFunction(GeneratedJoinCondition joinCondition,
InternalTypeInfo<RowData> returnTypeInfo,
boolean[] filterNulls) |
Modifier and Type | Method and Description |
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TypeInformation<RowData> |
getProducedType()
Gets the data type (as a
TypeInformation ) produced by this function or input format. |
void |
join(RowData first,
RowData second,
Collector<RowData> out)
The join method, called once per joined pair of elements.
|
void |
open(Configuration config)
Initialization method for the function.
|
void |
setJoinKey(RowData currentKey) |
close, getIterationRuntimeContext, getRuntimeContext, setRuntimeContext
public IntervalJoinFunction(GeneratedJoinCondition joinCondition, InternalTypeInfo<RowData> returnTypeInfo, boolean[] filterNulls)
public void open(Configuration config) throws Exception
RichFunction
The configuration object passed to the function can be used for configuration and initialization. The configuration contains all parameters that were configured on the function in the program composition.
public class MyFilter extends RichFilterFunction<String> {
private String searchString;
public void open(Configuration parameters) {
this.searchString = parameters.getString("foo");
}
public boolean filter(String value) {
return value.equals(searchString);
}
}
By default, this method does nothing.
open
in interface RichFunction
open
in class AbstractRichFunction
config
- The configuration containing the parameters attached to the contract.Exception
- Implementations may forward exceptions, which are caught by the runtime.
When the runtime catches an exception, it aborts the task and lets the fail-over logic
decide whether to retry the task execution.Configuration
public void join(RowData first, RowData second, Collector<RowData> out) throws Exception
FlatJoinFunction
join
in interface FlatJoinFunction<RowData,RowData,RowData>
join
in class RichFlatJoinFunction<RowData,RowData,RowData>
first
- The element from first input.second
- The element from second input.out
- The collector used to return zero, one, or more elements.Exception
- This method may throw exceptions. Throwing an exception will cause the
operation to fail and may trigger recovery.public TypeInformation<RowData> getProducedType()
ResultTypeQueryable
TypeInformation
) produced by this function or input format.getProducedType
in interface ResultTypeQueryable<RowData>
public void setJoinKey(RowData currentKey)
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