T
- The type of Object worked on.U
- The type of Object returned.public final class JsonNodeSelector<T,U>
extends java.lang.Object
JsonNodeSelector
extract values from Object
s of a specified type.
For example, given a JsonNode
representing {"Fee":{"fi":"fo"}}
,
anObjectNodeWithField("Fee") .withChild(anObjectNodeWithField("fi")) .withChild(aStringNode()) .getValue(jsonNode)will return the
String
"fo".JsonNodeSelectors
Modifier and Type | Method and Description |
---|---|
U |
getValue(T argument)
Extracts a value from the give
JsonNode . |
boolean |
matches(T argument)
Determines whether this
JsonNodeSelector can extract a value from the given JsonNode . |
java.lang.String |
toString() |
<V> JsonNodeSelector<T,V> |
with(JsonNodeSelector<U,V> childJsonNodeSelector)
Constructs a JsonNodeSelector consisting of this chained with the given
JsonNodeSelector . |
public boolean matches(T argument)
JsonNodeSelector
can extract a value from the given JsonNode
.argument
- the JsonNode
to test.JsonNode
, false otherwise.public U getValue(T argument)
JsonNode
.argument
- the JsonNode
to extract a value from.java.lang.IllegalArgumentException
- if calling matches
with the given JsonNode
would return false, indicating no value can be extracted from it.public <V> JsonNodeSelector<T,V> with(JsonNodeSelector<U,V> childJsonNodeSelector)
Constructs a JsonNodeSelector consisting of this chained with the given JsonNodeSelector
.
For example, if we have a JsonNodeSelector
for the first element of an array, and another that
selects the second element of an array, and we chain them together in that order, we will get a selector that
works on nested arrays, selecting the second element from an array stored in the first element of a parent
array.
V
- the type the chained JsonNodeSelector
will return.childJsonNodeSelector
- the JsonNodeSelector
to chain onto this.JsonNodeSelector
representing this, and the given selector applied in sequence.public java.lang.String toString()
toString
in class java.lang.Object