DefaultValueAssigner (Paimon : 1.0-SNAPSHOT API)

```
public class DefaultValueAssigner
extends Object
```
The field Default value assigner. note that invoke of assigning should be after merge and schema evolution.

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`RecordReader<InternalRow>`	`assignFieldsDefaultValue(RecordReader<InternalRow> reader)` assign default value for column which value is null.
`static DefaultValueAssigner`	`create(TableSchema schema)`
`Predicate`	`handlePredicate(Predicate filters)`
`DefaultValueAssigner`	`handleReadRowType(RowType readRowType)`
`boolean`	`needToAssign()`

public DefaultValueAssigner handleReadRowType(RowType readRowType)

public RecordReader<InternalRow> assignFieldsDefaultValue(RecordReader<InternalRow> reader)

assign default value for column which value is null.

public Predicate handlePredicate(Predicate filters)

public static DefaultValueAssigner create(TableSchema schema)

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