com.fasterxml.jackson.databind

Class DatabindContext

java.lang.Object

com.fasterxml.jackson.databind.DatabindContext

Direct Known Subclasses:

DeserializationContext, SerializerProvider

public abstract class DatabindContext
extends java.lang.Object

Shared base class for DeserializationContext and SerializerProvider, context objects passed through data-binding process. Designed so that some of implementations can rely on shared aspects like access to secondary contextual objects like type factories or handler instantiators.

Since:

2.2

Field Summary

Fields

Modifier and Type	Field and Description
private static int	MAX_ERROR_STR_LEN Let's limit length of error messages, for cases where underlying data may be very large -- no point in spamming logs with megabytes of meaningless data.

Constructor Summary

Constructors

Constructor and Description
DatabindContext()

Method Summary

Modifier and Type	Method and Description
protected java.lang.String	_colonConcat(java.lang.String msgBase, java.lang.String extra)
protected java.lang.String	_desc(java.lang.String desc)
protected java.lang.String	_format(java.lang.String msg, java.lang.Object... msgArgs)
protected java.lang.String	_quotedString(java.lang.String desc)
protected java.lang.String	_truncate(java.lang.String desc)
abstract boolean	canOverrideAccessModifiers() Convenience method for accessing serialization view in use (if any); equivalent to:
JavaType	constructSpecializedType(JavaType baseType, java.lang.Class<?> subclass) Convenience method for constructing subtypes, retaining generic type parameter (if any)
JavaType	constructType(java.lang.reflect.Type type) Convenience method for constructing JavaType for given JDK type (usually Class)
Converter<java.lang.Object,java.lang.Object>	converterInstance(Annotated annotated, java.lang.Object converterDef) Helper method to use to construct a Converter, given a definition that may be either actual converter instance, or Class for instantiating one.
abstract java.lang.Class<?>	getActiveView() Accessor for locating currently active view, if any; returns null if no view has been set.
abstract AnnotationIntrospector	getAnnotationIntrospector() Convenience method for accessing serialization view in use (if any); equivalent to:
abstract java.lang.Object	getAttribute(java.lang.Object key) Method for accessing attributes available in this context.
abstract MapperConfig<?>	getConfig() Accessor to currently active configuration (both per-request configs and per-mapper config).
abstract com.fasterxml.jackson.annotation.JsonFormat.Value	getDefaultPropertyFormat(java.lang.Class<?> baseType)
abstract java.util.Locale	getLocale()
abstract java.util.TimeZone	getTimeZone()
abstract TypeFactory	getTypeFactory()
protected abstract JsonMappingException	invalidTypeIdException(JavaType baseType, java.lang.String typeId, java.lang.String extraDesc) Helper method for constructing exception to indicate that given type id could not be resolved to a valid subtype of specified base type.
abstract boolean	isEnabled(MapperFeature feature) Convenience method for checking whether specified serialization feature is enabled or not.
com.fasterxml.jackson.annotation.ObjectIdGenerator<?>	objectIdGeneratorInstance(Annotated annotated, ObjectIdInfo objectIdInfo)
com.fasterxml.jackson.annotation.ObjectIdResolver	objectIdResolverInstance(Annotated annotated, ObjectIdInfo objectIdInfo)
<T> T	reportBadDefinition(java.lang.Class<?> type, java.lang.String msg)
abstract <T> T	reportBadDefinition(JavaType type, java.lang.String msg) Helper method called to indicate a generic problem that stems from type definition(s), not input data, or input/output state; typically this means throwing a InvalidDefinitionException.
JavaType	resolveSubType(JavaType baseType, java.lang.String subClass) Lookup method called when code needs to resolve class name from input; usually simple lookup
abstract DatabindContext	setAttribute(java.lang.Object key, java.lang.Object value) Method for setting per-call value of given attribute.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MAX_ERROR_STR_LEN

private static final int MAX_ERROR_STR_LEN

Let's limit length of error messages, for cases where underlying data may be very large -- no point in spamming logs with megabytes of meaningless data.

Since:

2.9

See Also:

Constant Field Values

Constructor Detail

DatabindContext

public DatabindContext()

Method Detail

getConfig

public abstract MapperConfig<?> getConfig()

Accessor to currently active configuration (both per-request configs and per-mapper config).

getAnnotationIntrospector

public abstract AnnotationIntrospector getAnnotationIntrospector()

Convenience method for accessing serialization view in use (if any); equivalent to:

   getConfig().getAnnotationIntrospector();

isEnabled

public abstract boolean isEnabled(MapperFeature feature)

Convenience method for checking whether specified serialization feature is enabled or not. Shortcut for:

  getConfig().isEnabled(feature);

canOverrideAccessModifiers

public abstract boolean canOverrideAccessModifiers()

Convenience method for accessing serialization view in use (if any); equivalent to:

   getConfig().canOverrideAccessModifiers();

getActiveView

public abstract java.lang.Class<?> getActiveView()

Accessor for locating currently active view, if any; returns null if no view has been set.

getLocale

public abstract java.util.Locale getLocale()

Since:

2.6

getTimeZone

public abstract java.util.TimeZone getTimeZone()

Since:

2.6

getDefaultPropertyFormat

public abstract com.fasterxml.jackson.annotation.JsonFormat.Value getDefaultPropertyFormat(java.lang.Class<?> baseType)

Since:

2.7

getAttribute

public abstract java.lang.Object getAttribute(java.lang.Object key)

Method for accessing attributes available in this context. Per-call attributes have highest precedence; attributes set via ObjectReader or ObjectWriter have lower precedence.

Parameters:

key - Key of the attribute to get

Returns:

Value of the attribute, if any; null otherwise

Since:

2.3

setAttribute

public abstract DatabindContext setAttribute(java.lang.Object key,
                                             java.lang.Object value)

Method for setting per-call value of given attribute. This will override any previously defined value for the attribute within this context.

Parameters:

key - Key of the attribute to set

value - Value to set attribute to

Returns:

This context object, to allow chaining

Since:

2.3

constructType

public JavaType constructType(java.lang.reflect.Type type)

Convenience method for constructing JavaType for given JDK type (usually Class)

constructSpecializedType

public JavaType constructSpecializedType(JavaType baseType,
                                         java.lang.Class<?> subclass)

Convenience method for constructing subtypes, retaining generic type parameter (if any)

resolveSubType

public JavaType resolveSubType(JavaType baseType,
                               java.lang.String subClass)
                        throws JsonMappingException

Lookup method called when code needs to resolve class name from input; usually simple lookup

Throws:

JsonMappingException

Since:

2.9

invalidTypeIdException

protected abstract JsonMappingException invalidTypeIdException(JavaType baseType,
                                                               java.lang.String typeId,
                                                               java.lang.String extraDesc)

Helper method for constructing exception to indicate that given type id could not be resolved to a valid subtype of specified base type. Most commonly called during polymorphic deserialization.

Note that most of the time this method should NOT be called directly: instead, method handleUnknownTypeId() should be called which will call this method if necessary.

Since:

2.9

getTypeFactory

public abstract TypeFactory getTypeFactory()

objectIdGeneratorInstance

public com.fasterxml.jackson.annotation.ObjectIdGenerator<?> objectIdGeneratorInstance(Annotated annotated,
                                                                                       ObjectIdInfo objectIdInfo)
                                                                                throws JsonMappingException

Throws:

JsonMappingException

objectIdResolverInstance

public com.fasterxml.jackson.annotation.ObjectIdResolver objectIdResolverInstance(Annotated annotated,
                                                                                  ObjectIdInfo objectIdInfo)

converterInstance

public Converter<java.lang.Object,java.lang.Object> converterInstance(Annotated annotated,
                                                                      java.lang.Object converterDef)
                                                               throws JsonMappingException

Helper method to use to construct a Converter, given a definition that may be either actual converter instance, or Class for instantiating one.

Throws:

JsonMappingException

Since:

2.2

reportBadDefinition

public abstract <T> T reportBadDefinition(JavaType type,
                                          java.lang.String msg)
                                   throws JsonMappingException

Helper method called to indicate a generic problem that stems from type definition(s), not input data, or input/output state; typically this means throwing a InvalidDefinitionException.

Throws:

JsonMappingException

Since:

2.9

reportBadDefinition

public <T> T reportBadDefinition(java.lang.Class<?> type,
                                 java.lang.String msg)
                          throws JsonMappingException

Throws:

JsonMappingException

Since:

2.9

_format

protected final java.lang.String _format(java.lang.String msg,
                                         java.lang.Object... msgArgs)

Since:

2.9

_truncate

protected final java.lang.String _truncate(java.lang.String desc)

Since:

2.9

_quotedString

protected java.lang.String _quotedString(java.lang.String desc)

Since:

2.9

_colonConcat

protected java.lang.String _colonConcat(java.lang.String msgBase,
                                        java.lang.String extra)

Since:

2.9

_desc

protected java.lang.String _desc(java.lang.String desc)

Since:

2.9