Further methods in generated classes

I was building a proof of concept system for an internal project using JZOS Record Generator, and ended up writing a few static helper functions that it would be nice to have inside the class, namely a constructor from String and an equals method.

Here is a sketch of the constructor-from-string as a generated method (useful for initializing group-items from concatenated strings, as in COBOL):

public MyTable(String s) {
this._byteBuffer = s.getBytes(factory.getStringEncoding());
}

Here is a sketch of the equals method, with hashCode overridden equivalently for more-natural integration with Java (I'd need to double-check for this one that byte-by-byte equality was the correct semantics, rather than just certain fields, ignoring FILLER items, etc; it wouldn't change the interface, but it would complicate the codegen):

public boolean equals(MyTable that) {
return java.util.Arrays.equals(this.getByteBuffer(), that.getByteBuffer());
}

@Override
public boolean equals(Object that) {
return (that instanceof MyTable) && this.equals((MyTable)that);
}

@Override
public int hashCode() {
return java.util.Arrays.hashCode(this.getByteBuffer());
}

For nested record types, all the Java standard library functions used above allow array offsets (except for Arrays.hashCode, though the hash algorithm is documented and simple to implement).