package com.facebook.presto.jdbc.internal.jackson.databind.deser;
import java.io.IOException;
import java.lang.reflect.*;
import com.facebook.presto.jdbc.internal.jackson.core.*;
import com.facebook.presto.jdbc.internal.jackson.databind.BeanProperty;
import com.facebook.presto.jdbc.internal.jackson.databind.DeserializationContext;
import com.facebook.presto.jdbc.internal.jackson.databind.JavaType;
import com.facebook.presto.jdbc.internal.jackson.databind.JsonDeserializer;
import com.facebook.presto.jdbc.internal.jackson.databind.JsonMappingException;
import com.facebook.presto.jdbc.internal.jackson.databind.introspect.AnnotatedMethod;
/**
* Class that represents a "wildcard" set method which can be used
* to generically set values of otherwise unmapped (aka "unknown")
* properties read from Json content.
*<p>
* !!! Note: might make sense to refactor to share some code
* with {@link SettableBeanProperty}?
*/
public final class SettableAnyProperty
{
/**
* Method used for setting "any" properties, along with annotation
* information. Retained to allow contextualization of any properties.
*/
final protected BeanProperty _property;
/**
* Physical JDK object used for assigning properties.
*/
final protected Method _setter;
final protected JavaType _type;
protected JsonDeserializer<Object> _valueDeserializer;
/*
/**********************************************************
/* Life-cycle
/**********************************************************
*/
public SettableAnyProperty(BeanProperty property, AnnotatedMethod setter, JavaType type,
JsonDeserializer<Object> valueDeser) {
this(property, setter.getAnnotated(), type, valueDeser);
}
public SettableAnyProperty(BeanProperty property, Method rawSetter, JavaType type,
JsonDeserializer<Object> valueDeser) {
_property = property;
_type = type;
_setter = rawSetter;
_valueDeserializer = valueDeser;
}
public SettableAnyProperty withValueDeserializer(JsonDeserializer<Object> deser) {
return new SettableAnyProperty(_property, _setter, _type, deser);
}
/*
/**********************************************************
/* Public API, accessors
/**********************************************************
*/
public BeanProperty getProperty() { return _property; }
public boolean hasValueDeserializer() { return (_valueDeserializer != null); }
public JavaType getType() { return _type; }
/*
/**********************************************************
/* Public API, deserialization
/**********************************************************
*/
/**
* Method called to deserialize appropriate value, given parser (and
* context), and set it using appropriate method (a setter method).
*/
public final void deserializeAndSet(JsonParser jp, DeserializationContext ctxt,
Object instance, String propName)
throws IOException, JsonProcessingException
{
set(instance, propName, deserialize(jp, ctxt));
}
public final Object deserialize(JsonParser jp, DeserializationContext ctxt)
throws IOException, JsonProcessingException
{
JsonToken t = jp.getCurrentToken();
if (t == JsonToken.VALUE_NULL) {
return null;
}
return _valueDeserializer.deserialize(jp, ctxt);
}
public final void set(Object instance, String propName, Object value)
throws IOException
{
try {
_setter.invoke(instance, propName, value);
} catch (Exception e) {
_throwAsIOE(e, propName, value);
}
}
/*
/**********************************************************
/* Helper methods
/**********************************************************
*/
/**
* @param e Exception to re-throw or wrap
* @param propName Name of property (from Json input) to set
* @param value Value of the property
*/
protected void _throwAsIOE(Exception e, String propName, Object value)
throws IOException
{
if (e instanceof IllegalArgumentException) {
String actType = (value == null) ? "[NULL]" : value.getClass().getName();
StringBuilder msg = new StringBuilder("Problem deserializing \"any\" property '").append(propName);
msg.append("' of class "+getClassName()+" (expected type: ").append(_type);
msg.append("; actual type: ").append(actType).append(")");
String origMsg = e.getMessage();
if (origMsg != null) {
msg.append(", problem: ").append(origMsg);
} else {
msg.append(" (no error message provided)");
}
throw new JsonMappingException(msg.toString(), null, e);
}
if (e instanceof IOException) {
throw (IOException) e;
}
if (e instanceof RuntimeException) {
throw (RuntimeException) e;
}
// let's wrap the innermost problem
Throwable t = e;
while (t.getCause() != null) {
t = t.getCause();
}
throw new JsonMappingException(t.getMessage(), null, t);
}
private String getClassName() { return _setter.getDeclaringClass().getName(); }
@Override public String toString() { return "[any property on class "+getClassName()+"]"; }
}