Struct (api 7.6.3-ce API)

java.lang.Object
- org.apache.kafka.connect.data.Struct

```
public class Struct
extends Object
```
A structured record containing a set of named fields with values, each field using an independent Schema. Struct objects must specify a complete Schema up front, and only fields specified in the Schema may be set.

The Struct's put(String, Object) method returns the Struct itself to provide a fluent API for constructing complete objects:
```
         Schema schema = SchemaBuilder.struct().name("com.example.Person")
             .field("name", Schema.STRING_SCHEMA).field("age", Schema.INT32_SCHEMA).build()
         Struct struct = new Struct(schema).put("name", "Bobby McGee").put("age", 21)
     
```

Constructor Summary

Constructors
Constructor and Description

Struct(Schema schema)
Create a new Struct for this Schema

Constructors
Constructor and Description
`Struct(Schema schema)` Create a new Struct for this `Schema`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`equals(Object o)`
`Object`	`get(Field field)` Get the value of a field, returning the default value if no value has been set yet and a default value is specified in the field's schema.
`Object`	`get(String fieldName)` Get the value of a field, returning the default value if no value has been set yet and a default value is specified in the field's schema.
`<T> List<T>`	`getArray(String fieldName)` Equivalent to calling `get(String)` and casting the result to a List.
`Boolean`	`getBoolean(String fieldName)` Equivalent to calling `get(String)` and casting the result to a Boolean.
`byte[]`	`getBytes(String fieldName)` Equivalent to calling `get(String)` and casting the result to a byte[].
`Float`	`getFloat32(String fieldName)` Equivalent to calling `get(String)` and casting the result to a Float.
`Double`	`getFloat64(String fieldName)` Equivalent to calling `get(String)` and casting the result to a Double.
`Short`	`getInt16(String fieldName)` Equivalent to calling `get(String)` and casting the result to a Short.
`Integer`	`getInt32(String fieldName)` Equivalent to calling `get(String)` and casting the result to an Integer.
`Long`	`getInt64(String fieldName)` Equivalent to calling `get(String)` and casting the result to a Long.
`Byte`	`getInt8(String fieldName)` Equivalent to calling `get(String)` and casting the result to a Byte.
`<K,V> Map<K,V>`	`getMap(String fieldName)` Equivalent to calling `get(String)` and casting the result to a Map.
`String`	`getString(String fieldName)` Equivalent to calling `get(String)` and casting the result to a String.
`Struct`	`getStruct(String fieldName)` Equivalent to calling `get(String)` and casting the result to a Struct.
`Object`	`getWithoutDefault(String fieldName)` Get the underlying raw value for the field without accounting for default values.
`int`	`hashCode()`
`Struct`	`put(Field field, Object value)` Set the value of a field.
`Struct`	`put(String fieldName, Object value)` Set the value of a field.
`Schema`	`schema()` Get the schema for this Struct.
`String`	`toString()`
`void`	`validate()` Validates that this struct has filled in all the necessary data with valid values.

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - Struct
```
public Struct(Schema schema)
```
    Create a new Struct for this Schema
    
    Parameters:
    
    schema - the Schema for the Struct
- Method Detail
  - schema
```
public Schema schema()
```
    Get the schema for this Struct.
    
    Returns:
    
    the Struct's schema
  - get
```
public Object get(String fieldName)
```
    Get the value of a field, returning the default value if no value has been set yet and a default value is specified in the field's schema. Because this handles fields of all types, the value is returned as an Object and must be cast to a more specific type.
    
    Parameters:
    
    fieldName - the field name to lookup
    
    Returns:
    
    the value for the field
  - get
```
public Object get(Field field)
```
    Get the value of a field, returning the default value if no value has been set yet and a default value is specified in the field's schema. Because this handles fields of all types, the value is returned as an Object and must be cast to a more specific type.
    
    Parameters:
    
    field - the field to lookup
    
    Returns:
    
    the value for the field
  - getWithoutDefault
```
public Object getWithoutDefault(String fieldName)
```
    Get the underlying raw value for the field without accounting for default values.
    
    Parameters:
    
    fieldName - the field to get the value of
    
    Returns:
    
    the raw value
  - getInt8
```
public Byte getInt8(String fieldName)
```
    Equivalent to calling get(String) and casting the result to a Byte.
  - getInt16
```
public Short getInt16(String fieldName)
```
    Equivalent to calling get(String) and casting the result to a Short.
  - getInt32
```
public Integer getInt32(String fieldName)
```
    Equivalent to calling get(String) and casting the result to an Integer.
  - getInt64
```
public Long getInt64(String fieldName)
```
    Equivalent to calling get(String) and casting the result to a Long.
  - getFloat32
```
public Float getFloat32(String fieldName)
```
    Equivalent to calling get(String) and casting the result to a Float.
  - getFloat64
```
public Double getFloat64(String fieldName)
```
    Equivalent to calling get(String) and casting the result to a Double.
  - getBoolean
```
public Boolean getBoolean(String fieldName)
```
    Equivalent to calling get(String) and casting the result to a Boolean.
  - getString
```
public String getString(String fieldName)
```
    Equivalent to calling get(String) and casting the result to a String.
  - getBytes
```
public byte[] getBytes(String fieldName)
```
    Equivalent to calling get(String) and casting the result to a byte[].
  - getArray
```
public <T> List<T> getArray(String fieldName)
```
    Equivalent to calling get(String) and casting the result to a List.
  - getMap
```
public <K,V> Map<K,V> getMap(String fieldName)
```
    Equivalent to calling get(String) and casting the result to a Map.
  - getStruct
```
public Struct getStruct(String fieldName)
```
    Equivalent to calling get(String) and casting the result to a Struct.
  - put
```
public Struct put(String fieldName,
                  Object value)
```
    Set the value of a field. Validates the value, throwing a DataException if it does not match the field's Schema.
    
    Parameters:
    
    fieldName - the name of the field to set
    
    value - the value of the field
    
    Returns:
    
    the Struct, to allow chaining of put(String, Object) calls
  - put
```
public Struct put(Field field,
                  Object value)
```
    Set the value of a field. Validates the value, throwing a DataException if it does not match the field's Schema.
    
    Parameters:
    
    field - the field to set
    
    value - the value of the field
    
    Returns:
    
    the Struct, to allow chaining of put(String, Object) calls
  - validate
```
public void validate()
```
    Validates that this struct has filled in all the necessary data with valid values. For required fields without defaults, this validates that a value has been set and has matching types/schemas. If any validation fails, throws a DataException.
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Class Struct

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Struct

Method Detail

schema

get

get

getWithoutDefault

getInt8

getInt16

getInt32

getInt64

getFloat32

getFloat64

getBoolean

getString

getBytes

getArray

getMap

getStruct

put

put

validate

equals

hashCode

toString