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[jOOQ/jOOQ#12509] DefaultConverterProvider should be able to convert

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from JSON(B) to the usual JSON types and back.
This commit is contained in:
Lukas Eder 2021-10-13 14:38:10 +02:00
parent c03a3b2dc5
commit d73c0ee011
1 changed files with 120 additions and 0 deletions
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120
jOOQ/src/main/java/org/jooq/impl/Convert.java
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@ -80,6 +80,7 @@ import java.util.Calendar;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
@ -110,6 +111,11 @@ import org.jooq.tools.JooqLogger;
import org.jooq.tools.Longs;
import org.jooq.tools.jdbc.MockArray;
import org.jooq.tools.jdbc.MockResultSet;
import org.jooq.tools.json.ContainerFactory;
import org.jooq.tools.json.JSONArray;
import org.jooq.tools.json.JSONObject;
import org.jooq.tools.json.JSONParser;
import org.jooq.tools.json.ParseException;
import org.jooq.tools.reflect.Reflect;
import org.jooq.types.UByte;
import org.jooq.types.UInteger;
@ -1112,6 +1118,66 @@ final class Convert {
return (U) JSONB.valueOf((String) from);
}
// [#12509] JSON data types can be read from Maps
else if (Map.class.isAssignableFrom(fromClass) && toClass == JSON.class) {
return (U) JSON.valueOf(JSONObject.toJSONString((Map) from));
}
// [#12509] JSONB data types can be read from Maps
else if (Map.class.isAssignableFrom(fromClass) && toClass == JSONB.class) {
return (U) JSONB.valueOf(JSONObject.toJSONString((Map) from));
}
// [#12509] JSON data types can be read from Lists
else if (List.class.isAssignableFrom(fromClass) && toClass == JSON.class) {
return (U) JSON.valueOf(JSONArray.toJSONString((List) from));
}
// [#12509] JSONB data types can be read from Lists
else if (List.class.isAssignableFrom(fromClass) && toClass == JSONB.class) {
return (U) JSONB.valueOf(JSONArray.toJSONString((List) from));
}
// [#12509] JSON data types can be written to Maps
else if (fromClass == JSON.class && Map.class.isAssignableFrom(toClass)) {
try {
return require(toClass, new JSONParser().parse(((JSON) from).data(), containerFactoryForMaps(toClass)));
}
catch (ParseException e) {
throw new DataTypeException("Error while mapping JSON to Map", e);
}
}
// [#12509] JSON data types can be written to Maps
else if (fromClass == JSONB.class && Map.class.isAssignableFrom(toClass)) {
try {
return require(toClass, new JSONParser().parse(((JSONB) from).data(), containerFactoryForMaps(toClass)));
}
catch (ParseException e) {
throw new DataTypeException("Error while mapping JSONB to Map", e);
}
}
// [#12509] JSON data types can be written to Lists
else if (fromClass == JSON.class && List.class.isAssignableFrom(toClass)) {
try {
return require(toClass, new JSONParser().parse(((JSON) from).data(), containerFactoryForLists(toClass)));
}
catch (ParseException e) {
throw new DataTypeException("Error while mapping JSON to List", e);
}
}
// [#12509] JSON data types can be written to Lists
else if (fromClass == JSONB.class && List.class.isAssignableFrom(toClass)) {
try {
return require(toClass, new JSONParser().parse(((JSONB) from).data(), containerFactoryForLists(toClass)));
}
catch (ParseException e) {
throw new DataTypeException("Error while mapping JSONB to List", e);
}
}
// [#10072] Out of the box Jackson JSON mapping support
else if (fromClass == JSON.class && _JSON.JSON_MAPPER != null) {
try {
@ -1247,6 +1313,60 @@ final class Convert {
throw fail(from, toClass);
}
@SuppressWarnings("unchecked")
private static final <T> T require(Class<? extends T> type, Object o) {
if (o == null || type.isInstance(o))
return (T) o;
else
throw new DataTypeException("Type " + type + " expected. Got: " + o.getClass());
}
@SuppressWarnings("rawtypes")
private static final ContainerFactory containerFactoryForMaps(Class<?> mapClass) {
return new ContainerFactory() {
@Override
public Map createObjectContainer() {
try {
if (mapClass == Map.class)
return new LinkedHashMap<>();
else
return (Map) mapClass.getConstructor().newInstance();
}
catch (Exception e) {
throw new DataTypeException("Error while mapping JSON to Map", e);
}
}
@Override
public List createArrayContainer() {
return new ArrayList<>();
}
};
}
@SuppressWarnings("rawtypes")
private static final ContainerFactory containerFactoryForLists(Class<?> listClass) {
return new ContainerFactory() {
@Override
public Map createObjectContainer() {
return new LinkedHashMap<>();
}
@Override
public List createArrayContainer() {
try {
if (listClass == List.class)
return new ArrayList<>();
else
return (List) listClass.getConstructor().newInstance();
}
catch (Exception e) {
throw new DataTypeException("Error while mapping JSON to List", e);
}
}
};
}
private static final String patchIso8601Time(String string) {
// [#12158] Support Db2's 15.30.45 format
return string.length() == 8