autovaluetest

Demonstrates using Google's AutoValue library to generate value classes.

Example steps are for use with VS Code as IDE:

1. Run mvn install to download JARs for dependencies into your local repository.
2. Run mvn compile to build source code, which will include an annotations processor that first generates the AutoValue classes into target/generated-sources.

Every time code is edited in VS Code, the annotation processor will run, updating the generated sources. This means you don't need to run mvn compile after editing code to run it in VS Code:

The mechanism that does this is unclear to me right now, but it provides a good experience as a developer. Edit code, and it's runnable.

The generated file will be here:

And it will look like this:

package mattwelke;

import javax.annotation.processing.Generated;

@Generated("com.google.auto.value.processor.AutoValueProcessor")
final class AutoValue_AutoValueMoney extends AutoValueMoney {

  private final String currency;

  private final long amount;

  AutoValue_AutoValueMoney(
      String currency,
      long amount) {
    if (currency == null) {
      throw new NullPointerException("Null currency");
    }
    this.currency = currency;
    this.amount = amount;
  }

  @Override
  public String getCurrency() {
    return currency;
  }

  @Override
  public long getAmount() {
    return amount;
  }

  @Override
  public String toString() {
    return "AutoValueMoney{"
        + "currency=" + currency + ", "
        + "amount=" + amount
        + "}";
  }

  @Override
  public boolean equals(Object o) {
    if (o == this) {
      return true;
    }
    if (o instanceof AutoValueMoney) {
      AutoValueMoney that = (AutoValueMoney) o;
      return this.currency.equals(that.getCurrency())
          && this.amount == that.getAmount();
    }
    return false;
  }

  @Override
  public int hashCode() {
    int h$ = 1;
    h$ *= 1000003;
    h$ ^= currency.hashCode();
    h$ *= 1000003;
    h$ ^= (int) ((amount >>> 32) ^ amount);
    return h$;
  }

}