in tika-serialization/src/main/java/org/apache/tika/serialization/TikaJsonDeserializer.java [348:417]
private static void setNumericValue(String name, JsonNode node, Object obj, List<Method> setters) throws ReflectiveOperationException {
//try numeric and equals first
for (Method m : setters) {
Class argClass = m.getParameters()[0].getType();
if ((argClass.equals(int.class) || argClass.equals(Integer.class)) && node.isInt()) {
m.invoke(obj, node.intValue());
return;
} else if ((argClass.equals(long.class) || argClass.equals(Long.class)) && node.isLong()) {
m.invoke(obj, node.asLong());
return;
} else if ((argClass.equals(float.class) || argClass.equals(Float.class)) && node.isFloat()) {
m.invoke(obj, node.floatValue());
return;
} else if ((argClass.equals(double.class) || argClass.equals(Double.class)) && node.isDouble()) {
m.invoke(obj, node.doubleValue());
return;
} else if ((argClass.equals(short.class) || argClass.equals(Short.class)) && node.isShort()) {
m.invoke(obj, node.shortValue());
return;
}
}
//try for higher precision setters
for (Method m : setters) {
Class argClass = m.getParameters()[0].getType();
if ((argClass.equals(long.class) || argClass.equals(Long.class)) && node.isInt()) {
m.invoke(obj, node.asLong());
return;
} else if ((argClass.equals(double.class) || argClass.equals(Double.class)) && node.isFloat()) {
m.invoke(obj, node.floatValue());
return;
}
}
//try for lower precision setters
//we have to do this for node=double, type=float; should we do this for long->integer?!
for (Method m : setters) {
Class argClass = m.getParameters()[0].getType();
if ((argClass.equals(int.class) || argClass.equals(Integer.class)) && node.isLong()) {
long val = node.longValue();
if (val >= Integer.MAX_VALUE || val <= Integer.MIN_VALUE) {
//don't do this
} else {
m.invoke(obj, node.intValue());
}
return;
} else if ((argClass.equals(float.class) || argClass.equals(Float.class)) && node.isDouble()) {
//TODO -- check for over/underflow
m.invoke(obj, node.floatValue());
return;
} else if ((argClass.equals(short.class) || argClass.equals(Short.class)) && node.isInt()) {
int val = node.intValue();
if (val > Short.MAX_VALUE || val < Short.MIN_VALUE) {
//don't do this
} else {
m.invoke(obj, node.shortValue());
return;
}
}
}
//finally try for String
for (Method m : setters) {
Class argClass = m.getParameters()[0].getType();
if (argClass.equals(String.class)) {
m.invoke(obj, node.asText());
return;
}
}
throw new IllegalArgumentException("Couldn't find numeric setter for: " + name);
}