Exception thrown for empty string enum value.

[joelittlejohn]

Original author: [email protected] (July 06, 2012 17:09:51)

What steps will reproduce the problem?

1. Generate Java code from test.json:
   {
   "id": "test",
   "type": "object",
   "additionalProperties": false,
   "properties": {
   "gender": {
   "type": "string",
   "default": "",
   "enum": [ "", "male", "female" ]
   }
   }
   }

What is the expected output?
Test.java

What do you see instead?
Program aborts with StringIndexOutOfBoundsException (full stack trace below).

What version of the product are you using?
0.3.0

On what Java version?
java version "1.6.0_30"

Replacing this code (EnumRule.getConstantName(EnumRule.java:188)):
if (Character.isDigit(enumName.charAt(0))) {
enumName = "" + enumName;
}
with this code:
if( enumName.length() == 0 ){
enumName = "EMPTY";
}else if (Character.isDigit(enumName.charAt(0))) {
enumName = "" + enumName;
}
resolves the issue.

Stack Trace:

Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 0
at java.lang.String.charAt(Unknown Source)
at com.googlecode.jsonschema2pojo.rules.EnumRule.getConstantName(EnumRule.java:188)
at com.googlecode.jsonschema2pojo.rules.EnumRule.addEnumConstants(EnumRule.java:162)
at com.googlecode.jsonschema2pojo.rules.EnumRule.apply(EnumRule.java:99)
at com.googlecode.jsonschema2pojo.rules.EnumRule.apply(EnumRule.java:1)
at com.googlecode.jsonschema2pojo.rules.JsonSchemaRule.apply(JsonSchemaRule.java:71)
at com.googlecode.jsonschema2pojo.rules.JsonSchemaRule.apply(JsonSchemaRule.java:1)
at com.googlecode.jsonschema2pojo.rules.PropertyRule.apply(PropertyRule.java:77)
at com.googlecode.jsonschema2pojo.rules.PropertyRule.apply(PropertyRule.java:1)
at com.googlecode.jsonschema2pojo.rules.PropertiesRule.apply(PropertiesRule.java:62)
at com.googlecode.jsonschema2pojo.rules.PropertiesRule.apply(PropertiesRule.java:1)
at com.googlecode.jsonschema2pojo.rules.ObjectRule.apply(ObjectRule.java:108)
at com.googlecode.jsonschema2pojo.rules.ObjectRule.apply(ObjectRule.java:1)
at com.googlecode.jsonschema2pojo.rules.TypeRule.apply(TypeRule.java:95)
at com.googlecode.jsonschema2pojo.rules.TypeRule.apply(TypeRule.java:1)
at com.googlecode.jsonschema2pojo.rules.JsonSchemaRule.apply(JsonSchemaRule.java:73)
at com.googlecode.jsonschema2pojo.rules.JsonSchemaRule.apply(JsonSchemaRule.java:66)
at com.googlecode.jsonschema2pojo.rules.JsonSchemaRule.apply(JsonSchemaRule.java:1)
at com.googlecode.jsonschema2pojo.SchemaMapperImpl.generate(SchemaMapperImpl.java:65)
at com.googlecode.jsonschema2pojo.cli.Jsonschema2Pojo.generate(Jsonschema2Pojo.java:92)
at com.googlecode.jsonschema2pojo.cli.Jsonschema2Pojo.main(Jsonschema2Pojo.java:60)

Original issue: http://code.google.com/p/jsonschema2pojo/issues/detail?id=58

[joelittlejohn]

From [email protected] on July 06, 2012 18:48:17
Thanks John. I'll add this to the next release.

[joelittlejohn]

From [email protected] on July 06, 2012 21:00:46
Fixed in 0.3.1.