Class KeySchemaElement
- All Implemented Interfaces:
Serializable
,Cloneable
Represents a single element of a key schema. A key schema specifies the attributes that make up the primary key of a table, or the key attributes of an index.
A KeySchemaElement represents exactly one attribute of the primary key. For example, a simple primary key would be represented by one KeySchemaElement (for the partition key). A composite primary key would require one KeySchemaElement for the partition key, and another KeySchemaElement for the sort key.
A KeySchemaElement must be a scalar, top-level attribute (not a nested attribute). The data type must be one of String, Number, or Binary. The attribute cannot be nested within a List or a Map.
- See Also:
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Constructor Summary
ConstructorsConstructorDescriptionDefault constructor for KeySchemaElement object.KeySchemaElement
(String attributeName, KeyType keyType) Constructs a new KeySchemaElement object.KeySchemaElement
(String attributeName, String keyType) Constructs a new KeySchemaElement object. -
Method Summary
Modifier and TypeMethodDescriptionclone()
boolean
The name of a key attribute.The role that this key attribute will assume:int
hashCode()
void
setAttributeName
(String attributeName) The name of a key attribute.void
setKeyType
(KeyType keyType) The role that this key attribute will assume:void
setKeyType
(String keyType) The role that this key attribute will assume:toString()
Returns a string representation of this object; useful for testing and debugging.withAttributeName
(String attributeName) The name of a key attribute.withKeyType
(KeyType keyType) The role that this key attribute will assume:withKeyType
(String keyType) The role that this key attribute will assume:
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Constructor Details
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KeySchemaElement
public KeySchemaElement()Default constructor for KeySchemaElement object. Callers should use the setter or fluent setter (with...) methods to initialize the object after creating it. -
KeySchemaElement
Constructs a new KeySchemaElement object. Callers should use the setter or fluent setter (with...) methods to initialize any additional object members.- Parameters:
attributeName
- The name of a key attribute.keyType
- The role that this key attribute will assume:-
HASH
- partition key -
RANGE
- sort key
The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their partition key values.
The sort key of an item is also known as its range attribute. The term "range attribute" derives from the way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key value.
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KeySchemaElement
Constructs a new KeySchemaElement object. Callers should use the setter or fluent setter (with...) methods to initialize any additional object members.- Parameters:
attributeName
- The name of a key attribute.keyType
- The role that this key attribute will assume:-
HASH
- partition key -
RANGE
- sort key
The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their partition key values.
The sort key of an item is also known as its range attribute. The term "range attribute" derives from the way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key value.
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Method Details
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setAttributeName
The name of a key attribute.
- Parameters:
attributeName
- The name of a key attribute.
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getAttributeName
The name of a key attribute.
- Returns:
- The name of a key attribute.
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withAttributeName
The name of a key attribute.
- Parameters:
attributeName
- The name of a key attribute.- Returns:
- Returns a reference to this object so that method calls can be chained together.
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setKeyType
The role that this key attribute will assume:
-
HASH
- partition key -
RANGE
- sort key
The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their partition key values.
The sort key of an item is also known as its range attribute. The term "range attribute" derives from the way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key value.
- Parameters:
keyType
- The role that this key attribute will assume:-
HASH
- partition key -
RANGE
- sort key
The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their partition key values.
The sort key of an item is also known as its range attribute. The term "range attribute" derives from the way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key value.
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- See Also:
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getKeyType
The role that this key attribute will assume:
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HASH
- partition key -
RANGE
- sort key
The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their partition key values.
The sort key of an item is also known as its range attribute. The term "range attribute" derives from the way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key value.
- Returns:
- The role that this key attribute will assume:
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HASH
- partition key -
RANGE
- sort key
The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their partition key values.
The sort key of an item is also known as its range attribute. The term "range attribute" derives from the way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key value.
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- See Also:
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withKeyType
The role that this key attribute will assume:
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HASH
- partition key -
RANGE
- sort key
The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their partition key values.
The sort key of an item is also known as its range attribute. The term "range attribute" derives from the way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key value.
- Parameters:
keyType
- The role that this key attribute will assume:-
HASH
- partition key -
RANGE
- sort key
The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their partition key values.
The sort key of an item is also known as its range attribute. The term "range attribute" derives from the way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key value.
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- Returns:
- Returns a reference to this object so that method calls can be chained together.
- See Also:
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setKeyType
The role that this key attribute will assume:
-
HASH
- partition key -
RANGE
- sort key
The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their partition key values.
The sort key of an item is also known as its range attribute. The term "range attribute" derives from the way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key value.
- Parameters:
keyType
- The role that this key attribute will assume:-
HASH
- partition key -
RANGE
- sort key
The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their partition key values.
The sort key of an item is also known as its range attribute. The term "range attribute" derives from the way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key value.
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- See Also:
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withKeyType
The role that this key attribute will assume:
-
HASH
- partition key -
RANGE
- sort key
The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their partition key values.
The sort key of an item is also known as its range attribute. The term "range attribute" derives from the way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key value.
- Parameters:
keyType
- The role that this key attribute will assume:-
HASH
- partition key -
RANGE
- sort key
The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their partition key values.
The sort key of an item is also known as its range attribute. The term "range attribute" derives from the way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key value.
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- Returns:
- Returns a reference to this object so that method calls can be chained together.
- See Also:
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toString
Returns a string representation of this object; useful for testing and debugging. -
equals
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hashCode
public int hashCode() -
clone
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