All Downloads are FREE. Search and download functionalities are using the official Maven repository.

com.groupbyinc.common.jackson.databind.ser.std.BooleanSerializer Maven / Gradle / Ivy

There is a newer version: 198
Show newest version
package com.fasterxml.jackson.databind.ser.std;

import java.io.IOException;
import java.lang.reflect.Type;

import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser.NumberType;
import com.fasterxml.jackson.databind.BeanProperty;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.annotation.JacksonStdImpl;
import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatVisitorWrapper;
import com.fasterxml.jackson.databind.jsontype.TypeSerializer;
import com.fasterxml.jackson.databind.ser.ContextualSerializer;

/**
 * Serializer used for primitive boolean, as well as java.util.Boolean
 * wrapper type.
 *

* Since this is one of "natural" (aka "native") types, no type information is ever * included on serialization (unlike for most other scalar types) */ @JacksonStdImpl public final class BooleanSerializer //In 2.9, removed use of intermediate type `NonTypedScalarSerializerBase` extends StdScalarSerializer implements ContextualSerializer { private static final long serialVersionUID = 1L; /** * Whether type serialized is primitive (boolean) or wrapper * (java.lang.Boolean); if true, former, if false, latter. */ protected final boolean _forPrimitive; public BooleanSerializer(boolean forPrimitive) { super(forPrimitive ? Boolean.TYPE : Boolean.class, false); _forPrimitive = forPrimitive; } @Override public JsonSerializer createContextual(SerializerProvider serializers, BeanProperty property) throws JsonMappingException { JsonFormat.Value format = findFormatOverrides(serializers, property, Boolean.class); if (format != null) { JsonFormat.Shape shape = format.getShape(); if (shape.isNumeric()) { return new AsNumber(_forPrimitive); } } return this; } @Override public void serialize(Object value, JsonGenerator g, SerializerProvider provider) throws IOException { g.writeBoolean(Boolean.TRUE.equals(value)); } @Override public final void serializeWithType(Object value, JsonGenerator g, SerializerProvider provider, TypeSerializer typeSer) throws IOException { g.writeBoolean(Boolean.TRUE.equals(value)); } @Override public JsonNode getSchema(SerializerProvider provider, Type typeHint) { return createSchemaNode("boolean", !_forPrimitive); } @Override public void acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor, JavaType typeHint) throws JsonMappingException { visitor.expectBooleanFormat(typeHint); } /** * Alternate implementation that is used when values are to be serialized * as numbers 0 (false) or 1 (true). * * @since 2.9 */ final static class AsNumber extends StdScalarSerializer implements ContextualSerializer { private static final long serialVersionUID = 1L; /** * Whether type serialized is primitive (boolean) or wrapper * (java.lang.Boolean); if true, former, if false, latter. */ protected final boolean _forPrimitive; public AsNumber(boolean forPrimitive) { super(forPrimitive ? Boolean.TYPE : Boolean.class, false); _forPrimitive = forPrimitive; } @Override public void serialize(Object value, JsonGenerator g, SerializerProvider provider) throws IOException { g.writeNumber((Boolean.FALSE.equals(value)) ? 0 : 1); } @Override public final void serializeWithType(Object value, JsonGenerator g, SerializerProvider provider, TypeSerializer typeSer) throws IOException { // 27-Mar-2017, tatu: Actually here we CAN NOT serialize as number without type, // since with natural types that would map to number, not boolean. So choice // comes to between either add type id, or serialize as boolean. Choose // latter at this point g.writeBoolean(Boolean.TRUE.equals(value)); } @Override public void acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor, JavaType typeHint) throws JsonMappingException { // 27-Mar-2017, tatu: As usual, bit tricky but... seems like we should call // visitor for actual representation visitIntFormat(visitor, typeHint, NumberType.INT); } @Override public JsonSerializer createContextual(SerializerProvider serializers, BeanProperty property) throws JsonMappingException { JsonFormat.Value format = findFormatOverrides(serializers, property, Boolean.class); if (format != null) { JsonFormat.Shape shape = format.getShape(); if (!shape.isNumeric()) { return new BooleanSerializer(_forPrimitive); } } return this; } } }