本文整理汇总了Java中org.apache.flink.api.common.operators.Ordering.getFieldPositions方法的典型用法代码示例。如果您正苦于以下问题：Java Ordering.getFieldPositions方法的具体用法？Java Ordering.getFieldPositions怎么用？Java Ordering.getFieldPositions使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.flink.api.common.operators.Ordering的用法示例。
在下文中一共展示了Ordering.getFieldPositions方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: setDataPropertiesFromSplitProperties
import org.apache.flink.api.common.operators.Ordering; //导入方法依赖的package包/类
private void setDataPropertiesFromSplitProperties(SplitDataProperties splitProps) {
// set global properties
int[] partitionKeys = splitProps.getSplitPartitionKeys();
Partitioner<?> partitioner = splitProps.getSplitPartitioner();
if(partitionKeys != null && partitioner != null) {
this.gprops.setCustomPartitioned(new FieldList(partitionKeys), partitioner);
}
else if(partitionKeys != null) {
this.gprops.setAnyPartitioning(new FieldList(partitionKeys));
}
// set local properties
int[] groupingKeys = splitProps.getSplitGroupKeys();
Ordering ordering = splitProps.getSplitOrder();
// more than one split per source tasks possible.
// adapt split grouping and sorting
if(ordering != null) {
// sorting falls back to grouping because a source can read multiple,
// randomly assigned splits
groupingKeys = ordering.getFieldPositions();
}
if(groupingKeys != null && partitionKeys != null) {
// check if grouping is also valid across splits, i.e., whether grouping keys are
// valid superset of partition keys
boolean allFieldsIncluded = true;
for(int i : partitionKeys) {
boolean fieldIncluded = false;
for(int j : groupingKeys) {
if(i == j) {
fieldIncluded = true;
break;
}
}
if(!fieldIncluded) {
allFieldsIncluded = false;
break;
}
}
if (allFieldsIncluded) {
this.lprops = LocalProperties.forGrouping(new FieldList(groupingKeys));
} else {
this.lprops = new LocalProperties();
}
} else {
this.lprops = new LocalProperties();
}
}