java.lang.Object
- com.google.cloud.spanner.Type

All Implemented Interfaces:

Serializable
```
@Immutable
public final class Type
extends Object
implements Serializable
```
Describes a type in the Cloud Spanner type system. Types can either be primitive (for example, INT64 and STRING) or composite (for example, ARRAY<INT64> or STRUCT<INT64,STRING>).
Type instances are immutable.

See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`Type.Code`	Enumerates the categories of types.
`static class`	`Type.StructField`	Describes an individual field in a `STRUCT type`.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static Type`	`array(Type elementType)`	Returns a descriptor for an array of `elementType`.
`static Type`	`bool()`	Returns the descriptor for the `BOOL type`.
`static Type`	`bytes()`	Returns the descriptor for the `BYTES` type: a variable-length byte string.
`static Type`	`date()`	Returns the descriptor for the `DATE` type: a timezone independent date in the range [0001-01-01, 9999-12-31).
`boolean`	`equals(Object o)`
`static Type`	`float64()`	Returns the descriptor for the `FLOAT64` type: a floating point type with the same value domain as a Java {code double}.
`Type`	`getArrayElementType()`	Returns the type descriptor for elements of this `ARRAY` type.
`Type.Code`	`getCode()`	Returns the type code corresponding to this type.
`int`	`getFieldIndex(String fieldName)`	Returns the index of the field named `fieldName` in this `STRUCT` type.
`List<Type.StructField>`	`getStructFields()`	Returns the fields of this `STRUCT` type.
`int`	`hashCode()`
`static Type`	`int64()`	Returns the descriptor for the `INT64` type: an integral type with the same value domain as a Java `long`.
`static Type`	`json()`	Returns the descriptor for the `JSON` type.
`static Type`	`numeric()`	Returns the descriptor for the `NUMERIC` type.
`static Type`	`pgJsonb()`	Returns the descriptor for the `JSONB` type.
`static Type`	`pgNumeric()`	Returns the descriptor for the `NUMERIC` type with the `PG_NUMERIC` type annotation.
`static Type`	`string()`	Returns the descriptor for the `STRING` type: a variable-length Unicode character string.
`static Type`	`struct(Type.StructField... fields)`	Returns a descriptor for a `STRUCT` type: an ordered collection of named and typed fields.
`static Type`	`struct(Iterable<Type.StructField> fields)`	Returns a descriptor for a `STRUCT` type: an ordered collection of named and typed fields.
`static Type`	`timestamp()`	Returns the descriptor for the `TIMESTAMP` type: a nano precision timestamp in the range [0000-01-01 00:00:00, 9999-12-31 23:59:59.999999999 UTC].
`String`	`toString()`

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

- Method Detail
  - bool
```
public static Type bool()
```
    Returns the descriptor for the BOOL type.
  - int64
```
public static Type int64()
```
    Returns the descriptor for the INT64 type: an integral type with the same value domain as a Java long.
  - float64
```
public static Type float64()
```
    Returns the descriptor for the FLOAT64 type: a floating point type with the same value domain as a Java {code double}.
  - numeric
```
public static Type numeric()
```
    Returns the descriptor for the NUMERIC type.
  - pgNumeric
```
public static Type pgNumeric()
```
    Returns the descriptor for the NUMERIC type with the PG_NUMERIC type annotation.
  - string
```
public static Type string()
```
    Returns the descriptor for the STRING type: a variable-length Unicode character string.
  - json
```
public static Type json()
```
    Returns the descriptor for the JSON type.
  - pgJsonb
```
public static Type pgJsonb()
```
    Returns the descriptor for the JSONB type.
  - bytes
```
public static Type bytes()
```
    Returns the descriptor for the BYTES type: a variable-length byte string.
  - timestamp
```
public static Type timestamp()
```
    Returns the descriptor for the TIMESTAMP type: a nano precision timestamp in the range [0000-01-01 00:00:00, 9999-12-31 23:59:59.999999999 UTC].
  - date
```
public static Type date()
```
    Returns the descriptor for the DATE type: a timezone independent date in the range [0001-01-01, 9999-12-31).
  - array
```
public static Type array(Type elementType)
```
    Returns a descriptor for an array of elementType.
  - struct
```
public static Type struct(Iterable<Type.StructField> fields)
```
    Returns a descriptor for a STRUCT type: an ordered collection of named and typed fields.
  - struct
```
public static Type struct(Type.StructField... fields)
```
    Returns a descriptor for a STRUCT type: an ordered collection of named and typed fields.
  - getCode
```
public Type.Code getCode()
```
    Returns the type code corresponding to this type.
  - getArrayElementType
```
public Type getArrayElementType()
```
    Returns the type descriptor for elements of this ARRAY type.
    
    Throws:
    
    IllegalStateException - if code() != Code.ARRAY
  - getStructFields
```
public List<Type.StructField> getStructFields()
```
    Returns the fields of this STRUCT type.
    
    Returns:
    
    an immutable list of the fields
    
    Throws:
    
    IllegalStateException - if code() != Code.STRUCT
  - getFieldIndex
```
public int getFieldIndex(String fieldName)
```
    Returns the index of the field named fieldName in this STRUCT type.
    
    Throws:
    
    IllegalArgumentException - if there is not exactly one element of getStructFields() with Type.StructField.getName() equal to fieldName
    
    IllegalStateException - if code() != Code.STRUCT
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object

Class Type

Nested Class Summary

Method Summary

Methods inherited from class java.lang.Object

Method Detail

bool

int64

float64

numeric

pgNumeric

string

json

pgJsonb

bytes

timestamp

date

array

struct

struct

getCode

getArrayElementType

getStructFields

getFieldIndex

toString

equals

hashCode