Package com.fasterxml.jackson.core

Enum StreamReadCapability

java.lang.Object

java.lang.Enum<StreamReadCapability>

com.fasterxml.jackson.core.StreamReadCapability

All Implemented Interfaces:

JacksonFeature, Serializable, Comparable<StreamReadCapability>

public enum StreamReadCapability
extends Enum<StreamReadCapability>
implements JacksonFeature

Set of on/off capabilities that a JsonParser for given format (or in case of buffering, original format) has. Used in some cases to adjust aspects of things like content conversions, coercions and validation by format-agnostic functionality. Specific or expected usage documented by individual capability entry Javadocs.

Since:

2.12

Enum Constant Summary

Enum Constants

Enum Constant	Description
DUPLICATE_PROPERTIES	Capability that indicates that data format can expose multiple properties with same name ("duplicates") within one Object context.
SCALARS_AS_OBJECTS	Capability that indicates that data format may in some cases expose Scalar values (whether typed or untyped) as Object values.
UNTYPED_SCALARS	Capability that indicates that data format only exposed "untyped" scalars: that is, instead of Number, Boolean and String types all scalar values are reported as text (JsonToken.VALUE_STRING) unless some sort of coercion is implied by caller.

Method Summary

Modifier and Type	Method	Description
boolean	enabledByDefault()	Accessor for checking whether this feature is enabled by default.
boolean	enabledIn(int flags)	Convenience method for checking whether feature is enabled in given bitmask.
int	getMask()	Returns bit mask for this feature instance; must be a single bit, that is of form 1 << N.
static StreamReadCapability	valueOf(String name)	Returns the enum constant of this type with the specified name.
static StreamReadCapability[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

compareTo, equals, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

DUPLICATE_PROPERTIES

public static final StreamReadCapability DUPLICATE_PROPERTIES

Capability that indicates that data format can expose multiple properties with same name ("duplicates") within one Object context. This is usually not enabled, except for formats like xml that have content model that does not map cleanly to JSON-based token stream.

Capability may be used for allowing secondary mapping of such duplicates in case of using Tree Model (see TreeNode), or "untyped" databinding (mapping content as generic Object).

Capability is currently only enabled for XML format backend.

SCALARS_AS_OBJECTS

public static final StreamReadCapability SCALARS_AS_OBJECTS

Capability that indicates that data format may in some cases expose Scalar values (whether typed or untyped) as Object values. There are additional access methods at databind level: this capability may be used to decide whether to attempt to use such methods especially in potentially ambiguous cases.

Capability is currently only enabled for XML format backend.

UNTYPED_SCALARS

public static final StreamReadCapability UNTYPED_SCALARS

Capability that indicates that data format only exposed "untyped" scalars: that is, instead of Number, Boolean and String types all scalar values are reported as text (JsonToken.VALUE_STRING) unless some sort of coercion is implied by caller.

This capability is true for many textual formats like CSV, Properties and XML.

Method Detail

values

public static StreamReadCapability[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (StreamReadCapability c : StreamReadCapability.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static StreamReadCapability valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

enabledByDefault

public boolean enabledByDefault()

Description copied from interface: JacksonFeature

Accessor for checking whether this feature is enabled by default.

Specified by:

enabledByDefault in interface JacksonFeature

Returns:

Whether this instance is enabled by default or not

enabledIn

public boolean enabledIn(int flags)

Description copied from interface: JacksonFeature

Convenience method for checking whether feature is enabled in given bitmask.

Specified by:

enabledIn in interface JacksonFeature

Parameters:

flags - Bit field that contains a set of enabled features of this type

Returns:

True if this feature is enabled in passed bit field

getMask

public int getMask()

Description copied from interface: JacksonFeature

Returns bit mask for this feature instance; must be a single bit, that is of form 1 << N.

Specified by:

getMask in interface JacksonFeature

Returns:

Bit mask of this feature