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merged from upstream; resurrected accidentally deleted Utils class
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29 changes: 29 additions & 0 deletions
29
core/src/main/java/org/apache/spark/api/java/function/CoGroupFunction.java
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/* | ||
* 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. | ||
*/ | ||
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package org.apache.spark.api.java.function; | ||
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import java.io.Serializable; | ||
import java.util.Iterator; | ||
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/** | ||
* A function that returns zero or more output records from each grouping key and its values from 2 | ||
* Datasets. | ||
*/ | ||
public interface CoGroupFunction<K, V1, V2, R> extends Serializable { | ||
Iterable<R> call(K key, Iterator<V1> left, Iterator<V2> right) throws Exception; | ||
} |
29 changes: 29 additions & 0 deletions
29
core/src/main/java/org/apache/spark/api/java/function/FilterFunction.java
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/* | ||
* 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. | ||
*/ | ||
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package org.apache.spark.api.java.function; | ||
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import java.io.Serializable; | ||
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/** | ||
* Base interface for a function used in Dataset's filter function. | ||
* | ||
* If the function returns true, the element is discarded in the returned Dataset. | ||
*/ | ||
public interface FilterFunction<T> extends Serializable { | ||
boolean call(T value) throws Exception; | ||
} |
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28 changes: 28 additions & 0 deletions
28
core/src/main/java/org/apache/spark/api/java/function/FlatMapGroupFunction.java
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/* | ||
* 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. | ||
*/ | ||
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package org.apache.spark.api.java.function; | ||
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import java.io.Serializable; | ||
import java.util.Iterator; | ||
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/** | ||
* A function that returns zero or more output records from each grouping key and its values. | ||
*/ | ||
public interface FlatMapGroupFunction<K, V, R> extends Serializable { | ||
Iterable<R> call(K key, Iterator<V> values) throws Exception; | ||
} |
29 changes: 29 additions & 0 deletions
29
core/src/main/java/org/apache/spark/api/java/function/ForeachFunction.java
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@@ -0,0 +1,29 @@ | ||
/* | ||
* 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. | ||
*/ | ||
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package org.apache.spark.api.java.function; | ||
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import java.io.Serializable; | ||
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/** | ||
* Base interface for a function used in Dataset's foreach function. | ||
* | ||
* Spark will invoke the call function on each element in the input Dataset. | ||
*/ | ||
public interface ForeachFunction<T> extends Serializable { | ||
void call(T t) throws Exception; | ||
} |
28 changes: 28 additions & 0 deletions
28
core/src/main/java/org/apache/spark/api/java/function/ForeachPartitionFunction.java
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@@ -0,0 +1,28 @@ | ||
/* | ||
* 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. | ||
*/ | ||
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package org.apache.spark.api.java.function; | ||
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import java.io.Serializable; | ||
import java.util.Iterator; | ||
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/** | ||
* Base interface for a function used in Dataset's foreachPartition function. | ||
*/ | ||
public interface ForeachPartitionFunction<T> extends Serializable { | ||
void call(Iterator<T> t) throws Exception; | ||
} |
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27 changes: 27 additions & 0 deletions
27
core/src/main/java/org/apache/spark/api/java/function/MapFunction.java
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@@ -0,0 +1,27 @@ | ||
/* | ||
* 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. | ||
*/ | ||
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package org.apache.spark.api.java.function; | ||
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import java.io.Serializable; | ||
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/** | ||
* Base interface for a map function used in Dataset's map function. | ||
*/ | ||
public interface MapFunction<T, U> extends Serializable { | ||
U call(T value) throws Exception; | ||
} |
28 changes: 28 additions & 0 deletions
28
core/src/main/java/org/apache/spark/api/java/function/MapGroupFunction.java
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---|---|---|
@@ -0,0 +1,28 @@ | ||
/* | ||
* 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. | ||
*/ | ||
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package org.apache.spark.api.java.function; | ||
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import java.io.Serializable; | ||
import java.util.Iterator; | ||
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/** | ||
* Base interface for a map function used in GroupedDataset's map function. | ||
*/ | ||
public interface MapGroupFunction<K, V, R> extends Serializable { | ||
R call(K key, Iterator<V> values) throws Exception; | ||
} |
28 changes: 28 additions & 0 deletions
28
core/src/main/java/org/apache/spark/api/java/function/MapPartitionsFunction.java
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---|---|---|
@@ -0,0 +1,28 @@ | ||
/* | ||
* 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. | ||
*/ | ||
|
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package org.apache.spark.api.java.function; | ||
|
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import java.io.Serializable; | ||
import java.util.Iterator; | ||
|
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/** | ||
* Base interface for function used in Dataset's mapPartitions. | ||
*/ | ||
public interface MapPartitionsFunction<T, U> extends Serializable { | ||
Iterable<U> call(Iterator<T> input) throws Exception; | ||
} |
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