# ADR-0003 - Avoid introducing Groovy types to public API

## Status

- ACCEPTED on 2024-01-12

## Context

Gradle's public API requires equal access from all JVM-based languages.
Kotlin, Groovy, Java, and other JVM-based languages should be able to use the Gradle API without relying on another language's standard library.

Historically, Gradle has shipped with some Groovy types in very prominent APIs.

    public static final String LABELS_CREATED_BY = "{labels.createdBy}";

    /** The key of the message: Created Time */
    public static final String LABELS_CREATED_TIME = "{labels.createdTime}";

    /** The key of the message: Depth */
    public static final String LABELS_DEPTH = "{labels.depth}";

    /** The key of the message: Excluded Paths for Crawling */

        public String getPathInfo() {
            return null;
        }

        @Override
        public String getPathTranslated() {
            return null;
        }

        @Override
        public String getContextPath() {
            return "";
        }

        @Override
        public String getQueryString() {
            return null;
        }

        @Override

            @Override
            public String getQueryDefaultQueryType() {
                return queryType;
            }

            // Delegate all other methods to base config
            @Override
            public String get(String key) {
                return baseConfig.get(key);
            }

            @Override
            public String getIndexFieldTitle() {

        public void setCharacterEncoding(String env) {
        }

        @Override
        public int getContentLength() {
            return 0;
        }

        @Override
        public long getContentLengthLong() {
            return 0;
        }

        @Override
        public String getContentType() {
            return null;
        }

        @Override

            public int getNumberOfNodes() {
                return 3;
            }

            @Override
            public int getNumberOfDataNodes() {
                return 3;
            }

            @Override
            public int getActivePrimaryShards() {
                return 10;
            }

            @Override
            public int getActiveShards() {
                return 20;

        public String getSort() {
            return null;
        }

        @Override
        public int getStartPosition() {
            return 0;
        }

        @Override
        public int getPageSize() {
            return 10;
        }

        @Override
        public int getOffset() {
            return 0;
        }

        @Override

    public Set<String> mymodifiedProperties() {
        return __modifiedProperties.getPropertyNames();
    }

    public void mymodifyProperty(String propertyName) {
        registerModifiedProperty(propertyName);
    }

    public void mymodifyPropertyCancel(String propertyName) {
        __modifiedProperties.remove(propertyName);
    }

    public void clearModifiedInfo() {

  public @Nullable E lower(E e) {
    return delegate.lower(checkValid(e));
  }

  @Override
  public @Nullable E pollFirst() {
    return delegate.pollFirst();
  }

  @Override
  public @Nullable E pollLast() {
    return delegate.pollLast();
  }

  @Override
  public boolean remove(Object object) {
    return delegate.remove(checkValid(object));
  }

  @Override

  }

  public void testSize0() {
    assertEquals(0, FluentIterable.<String>of().size());
  }

  public void testSize1Collection() {
    assertEquals(1, FluentIterable.from(asList("a")).size());
  }

  public void testSize2NonCollection() {
    Iterable<Integer> iterable =
        new Iterable<Integer>() {
          @Override
          public Iterator<Integer> iterator() {