package com.fasterxml.jackson.datatype.guava.deser;
import java.io.IOException;
import java.util.Arrays;
import com.google.common.base.Preconditions;
import com.google.common.collect.BoundType;
import com.google.common.collect.Range;
import com.fasterxml.jackson.core.*;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.deser.ContextualDeserializer;
import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
import com.fasterxml.jackson.databind.jsontype.TypeDeserializer;
import com.fasterxml.jackson.databind.type.TypeFactory;
import com.fasterxml.jackson.datatype.guava.deser.util.RangeFactory;
import com.fasterxml.jackson.datatype.guava.deser.util.RangeHelper;
public class RangeDeserializer
extends StdDeserializer<Range<?>>
implements ContextualDeserializer
{
private static final long serialVersionUID = 1L;
protected final JavaType _rangeType;
protected final JsonDeserializer<Object> _endpointDeserializer;
protected final BoundType _defaultBoundType;
protected final RangeHelper.RangeProperties _fieldNames;
@Deprecated
public RangeDeserializer(JavaType rangeType) {
this(null, rangeType);
}
public RangeDeserializer(BoundType defaultBoundType, JavaType rangeType) {
this(rangeType, null, defaultBoundType);
}
public RangeDeserializer(JavaType rangeType, JsonDeserializer<?> endpointDeser) {
this(rangeType, endpointDeser, null);
}
@Deprecated
public RangeDeserializer(JavaType rangeType, JsonDeserializer<?> endpointDeser,
BoundType defaultBoundType)
{
this(rangeType, endpointDeser, defaultBoundType, RangeHelper.standardNames());
}
@SuppressWarnings("unchecked")
protected RangeDeserializer(JavaType rangeType, JsonDeserializer<?> endpointDeser,
BoundType defaultBoundType, RangeHelper.RangeProperties fieldNames)
{
super(rangeType);
_rangeType = rangeType;
_endpointDeserializer = (JsonDeserializer<Object>) endpointDeser;
_defaultBoundType = defaultBoundType;
_fieldNames = fieldNames;
}
@Override
public JavaType getValueType() { return _rangeType; }
@Override
public JsonDeserializer<?> createContextual(DeserializationContext ctxt,
BeanProperty property) throws JsonMappingException
{
final RangeHelper.RangeProperties fieldNames = RangeHelper.getPropertyNames(ctxt.getConfig(),
ctxt.getConfig().getPropertyNamingStrategy());
JsonDeserializer<?> deser = _endpointDeserializer;
if (deser == null) {
JavaType endpointType = _rangeType.containedType(0);
if (endpointType == null) {
endpointType = TypeFactory.unknownType();
}
deser = ctxt.findContextualValueDeserializer(endpointType, property);
} else if (deser instanceof ContextualDeserializer) {
deser = ((ContextualDeserializer) deser).createContextual(ctxt, property);
}
if ((deser != _endpointDeserializer) || (fieldNames != _fieldNames)) {
return new RangeDeserializer(_rangeType, deser, _defaultBoundType, fieldNames);
}
return this;
}
@Override
public Object deserializeWithType(JsonParser p, DeserializationContext ctxt,
TypeDeserializer typeDeserializer)
throws IOException
{
return typeDeserializer.deserializeTypedFromObject(p, ctxt);
}
@Override
public Range<?> deserialize(JsonParser p, DeserializationContext context)
throws IOException
{
JsonToken t = p.getCurrentToken();
if (t == JsonToken.START_OBJECT) {
t = p.nextToken();
}
Comparable<?> lowerEndpoint = null;
Comparable<?> upperEndpoint = null;
BoundType lowerBoundType = _defaultBoundType;
BoundType upperBoundType = _defaultBoundType;
for (; t != JsonToken.END_OBJECT; t = p.nextToken()) {
expect(context, JsonToken.FIELD_NAME, t);
String fieldName = p.getCurrentName();
try {
if (fieldName.equals(_fieldNames.lowerEndpoint)) {
p.nextToken();
lowerEndpoint = deserializeEndpoint(context, p);
} else if (fieldName.equals(_fieldNames.upperEndpoint)) {
p.nextToken();
upperEndpoint = deserializeEndpoint(context, p);
} else if (fieldName.equals(_fieldNames.lowerBoundType)) {
p.nextToken();
lowerBoundType = deserializeBoundType(context, p);
} else if (fieldName.equals(_fieldNames.upperBoundType)) {
p.nextToken();
upperBoundType = deserializeBoundType(context, p);
} else {
context.handleUnknownProperty(p, this, Range.class, fieldName);
}
} catch (IllegalStateException e) {
throw JsonMappingException.from(p, e.getMessage());
}
}
try {
if ((lowerEndpoint != null) && (upperEndpoint != null)) {
Preconditions.checkState(lowerEndpoint.getClass() == upperEndpoint.getClass(),
"Endpoint types are not the same - 'lowerEndpoint' deserialized to [%s], and 'upperEndpoint' deserialized to [%s].",
lowerEndpoint.getClass().getName(),
upperEndpoint.getClass().getName());
Preconditions.checkState(lowerBoundType != null, "'lowerEndpoint' field found, but not 'lowerBoundType'");
Preconditions.checkState(upperBoundType != null, "'upperEndpoint' field found, but not 'upperBoundType'");
return RangeFactory.range(lowerEndpoint, lowerBoundType, upperEndpoint, upperBoundType);
}
if (lowerEndpoint != null) {
Preconditions.checkState(lowerBoundType != null, "'lowerEndpoint' field found, but not 'lowerBoundType'");
return RangeFactory.downTo(lowerEndpoint, lowerBoundType);
}
if (upperEndpoint != null) {
Preconditions.checkState(upperBoundType != null, "'upperEndpoint' field found, but not 'upperBoundType'");
return RangeFactory.upTo(upperEndpoint, upperBoundType);
}
return RangeFactory.all();
} catch (IllegalStateException e) {
throw JsonMappingException.from(p, e.getMessage());
}
}
private BoundType deserializeBoundType(DeserializationContext context, JsonParser p) throws IOException
{
expect(context, JsonToken.VALUE_STRING, p.getCurrentToken());
String name = p.getText();
try {
return BoundType.valueOf(name);
} catch (IllegalArgumentException e) {
return (BoundType) context.handleWeirdStringValue(BoundType.class, name,
"not a valid BoundType name (should be one oF: %s)",
Arrays.asList(BoundType.values()));
}
}
private Comparable<?> deserializeEndpoint(DeserializationContext context, JsonParser p) throws IOException
{
Object obj = _endpointDeserializer.deserialize(p, context);
if (!(obj instanceof Comparable)) {
context.reportBadDefinition(_rangeType,
String.format(
"Field [%s] deserialized to [%s], which does not implement Comparable.",
p.getCurrentName(), obj.getClass().getName()));
}
return (Comparable<?>) obj;
}
private void expect(DeserializationContext context, JsonToken expected, JsonToken actual) throws JsonMappingException
{
if (actual != expected) {
context.reportInputMismatch(this, String.format("Problem deserializing %s: expecting %s, found %s",
handledType().getName(), expected, actual));
}
}
}