All Downloads are FREE. Search and download functionalities are using the official Maven repository.
Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $
You can buy this project and download/modify it how often you want.
io.prestosql.jdbc.$internal.jackson.datatype.guava.deser.GuavaMapDeserializer Maven / Gradle / Ivy
package io.prestosql.jdbc.$internal.jackson.datatype.guava.deser;
import java.io.IOException;
import io.prestosql.jdbc.$internal.jackson.core.*;
import io.prestosql.jdbc.$internal.jackson.databind.*;
import io.prestosql.jdbc.$internal.jackson.databind.deser.ContextualDeserializer;
import io.prestosql.jdbc.$internal.jackson.databind.deser.ContextualKeyDeserializer;
import io.prestosql.jdbc.$internal.jackson.databind.deser.NullValueProvider;
import io.prestosql.jdbc.$internal.jackson.databind.deser.std.ContainerDeserializerBase;
import io.prestosql.jdbc.$internal.jackson.databind.jsontype.TypeDeserializer;
public abstract class GuavaMapDeserializer
extends ContainerDeserializerBase
implements ContextualDeserializer
{
private static final long serialVersionUID = 2L;
/**
* Key deserializer used, if not null. If null, String from JSON
* content is used as is.
*/
protected KeyDeserializer _keyDeserializer;
/**
* Value deserializer.
*/
protected JsonDeserializer _valueDeserializer;
/**
* If value instances have polymorphic type information, this
* is the type deserializer that can handle it
*/
protected final TypeDeserializer _valueTypeDeserializer;
/*
/**********************************************************
/* Life-cycle
/**********************************************************
*/
protected GuavaMapDeserializer(JavaType type, KeyDeserializer keyDeser,
JsonDeserializer valueDeser, TypeDeserializer valueTypeDeser,
NullValueProvider nuller)
{
super(type, nuller, null);
_keyDeserializer = keyDeser;
_valueDeserializer = valueDeser;
_valueTypeDeserializer = valueTypeDeser;
}
/**
* Overridable fluent factory method used for creating contextual
* instances.
*/
public abstract GuavaMapDeserializer withResolved(KeyDeserializer keyDeser,
JsonDeserializer valueDeser, TypeDeserializer valueTypeDeser,
NullValueProvider nuller);
/*
/**********************************************************
/* Abstract method impl
/**********************************************************
*/
@SuppressWarnings("unchecked")
@Override
public JsonDeserializer getContentDeserializer() {
return (JsonDeserializer) _valueDeserializer;
}
/*
/**********************************************************
/* Validation, post-processing
/**********************************************************
*/
/**
* Method called to finalize setup of this deserializer,
* after deserializer itself has been registered. This
* is needed to handle recursive and transitive dependencies.
*/
@Override
public JsonDeserializer createContextual(DeserializationContext ctxt,
BeanProperty property) throws JsonMappingException
{
KeyDeserializer keyDeser = _keyDeserializer;
JsonDeserializer valueDeser = _valueDeserializer;
TypeDeserializer valueTypeDeser = _valueTypeDeserializer;
// First: fetch and/or contextualize deserializers (key, value, value type)
if (keyDeser == null) {
keyDeser = ctxt.findKeyDeserializer(_containerType.getKeyType(), property);
} else {
if (keyDeser instanceof ContextualKeyDeserializer) {
keyDeser = ((ContextualKeyDeserializer) keyDeser).createContextual(ctxt, property);
}
}
final JavaType vt = _containerType.getContentType();
if (valueDeser == null) {
valueDeser = ctxt.findContextualValueDeserializer(vt, property);
} else {
valueDeser = ctxt.handleSecondaryContextualization(valueDeser, property, vt);
}
if (valueTypeDeser != null) {
valueTypeDeser = valueTypeDeser.forProperty(property);
}
// Then other handlers
NullValueProvider nuller = findContentNullProvider(ctxt, property, valueDeser);
// !!! 08-Aug-2019, tatu: TODO: null skipping? Ignored properties?
if ((_keyDeserializer == keyDeser) && (_valueDeserializer == valueDeser)
&& (_valueTypeDeserializer == valueTypeDeser)
&& (_nullProvider == nuller)
) {
return this;
}
return withResolved(keyDeser, valueDeser, valueTypeDeser, nuller);
}
/*
/**********************************************************
/* Deserialization interface
/**********************************************************
*/
/**
* Base implementation that does not assume specific type
* inclusion mechanism. Sub-classes are expected to override
* this method if they are to handle type information.
*/
@Override
public Object deserializeWithType(JsonParser p, DeserializationContext ctxt,
TypeDeserializer typeDeserializer)
throws IOException
{
// note: call "...FromObject" because expected output structure
// for value is JSON Object (regardless of contortions used for type id)
return typeDeserializer.deserializeTypedFromObject(p, ctxt);
}
@SuppressWarnings("unchecked")
@Override
public T deserialize(JsonParser p, DeserializationContext ctxt)
throws IOException
{
// Ok: must point to START_OBJECT or FIELD_NAME
JsonToken t = p.getCurrentToken();
if (t == JsonToken.START_OBJECT) { // If START_OBJECT, move to next; may also be END_OBJECT
t = p.nextToken();
}
if (t != JsonToken.FIELD_NAME && t != JsonToken.END_OBJECT) {
return (T) ctxt.handleUnexpectedToken(_containerType.getRawClass(), p);
}
return _deserializeEntries(p, ctxt);
}
/*
/**********************************************************************
/* Abstract methods for impl classes
/**********************************************************************
*/
protected abstract T _deserializeEntries(JsonParser p, DeserializationContext ctxt)
throws IOException;
}
