public static class ArrayOperators.Size extends Object
AggregationExpression
for $size
.Modifier and Type | Method and Description |
---|---|
protected List<Object> |
append(Object value) |
protected Map<String,Object> |
append(String key,
Object value) |
protected Map<String,Object> |
argumentMap()
Get the argument map.
|
protected static List<Field> |
asFields(String... fieldRefs) |
protected boolean |
contains(Object key)
Check if the given key is available.
|
protected <T> T |
get(int index)
Get the value at a given index.
|
protected <T> T |
get(Object key)
Get the value for a given key.
|
protected String |
getMongoMethod() |
static ArrayOperators.Size |
lengthOfArray(AggregationExpression expression)
Creates new
ArrayOperators.Size . |
static ArrayOperators.Size |
lengthOfArray(Collection<?> values)
Creates new
ArrayOperators.Size . |
static ArrayOperators.Size |
lengthOfArray(String fieldReference)
Creates new
ArrayOperators.Size . |
org.bson.Document |
toDocument(AggregationOperationContext context)
|
org.bson.Document |
toDocument(Object value,
AggregationOperationContext context) |
protected List<Object> |
values() |
protected String getMongoMethod()
public static ArrayOperators.Size lengthOfArray(String fieldReference)
ArrayOperators.Size
.fieldReference
- must not be null.public static ArrayOperators.Size lengthOfArray(AggregationExpression expression)
ArrayOperators.Size
.expression
- must not be null.public static ArrayOperators.Size lengthOfArray(Collection<?> values)
ArrayOperators.Size
.values
- must not be null.ArrayOperators.Size
.public org.bson.Document toDocument(AggregationOperationContext context)
AggregationExpression
toDocument
in interface AggregationExpression
public org.bson.Document toDocument(Object value, AggregationOperationContext context)
protected <T> T get(int index)
T
- index
- protected <T> T get(Object key)
T
- key
- protected boolean contains(Object key)
key
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