EqualityDeltaWriter

Type Parameters:

T - the row type

All Superinterfaces:

java.lang.AutoCloseable, java.io.Closeable
```
public interface EqualityDeltaWriter<T>
extends java.io.Closeable
```
A writer capable of writing data and equality deletes that may belong to different specs and partitions.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`delete(T row, PartitionSpec spec, StructLike partition)`	Deletes a row from the provided spec/partition.
`void`	`deleteKey(T key, PartitionSpec spec, StructLike partition)`	Deletes a key from the provided spec/partition.
`void`	`insert(T row, PartitionSpec spec, StructLike partition)`	Inserts a row to the provided spec/partition.
`WriteResult`	`result()`	Returns a result that contains information about written `DataFile`s or `DeleteFile`s.

Methods inherited from interface java.io.Closeable
close

- Method Detail
  - insert
```
void insert(T row,
            PartitionSpec spec,
            StructLike partition)
```
    Inserts a row to the provided spec/partition.
    
    Parameters:
    
    row - a data record
    
    spec - a partition spec
    
    partition - a partition or null if the spec is unpartitioned
  - delete
```
void delete(T row,
            PartitionSpec spec,
            StructLike partition)
```
    Deletes a row from the provided spec/partition.
    This method assumes the delete record has the same schema as the rows that will be inserted.
    
    Parameters:
    
    row - a delete record
    
    spec - a partition spec
    
    partition - a partition or null if the spec is unpartitioned
  - deleteKey
```
void deleteKey(T key,
               PartitionSpec spec,
               StructLike partition)
```
    Deletes a key from the provided spec/partition.
    This method assumes the delete key contains values only for equality fields.
    
    Parameters:
    
    key - a delete key
    
    spec - a partition spec
    
    partition - a partition or null if the spec is unpartitioned
  - result
```
WriteResult result()
```
    Returns a result that contains information about written DataFiles or DeleteFiles. The result is valid only after the writer is closed.
    
    Returns:
    
    the writer result