# Build state model

The Gradle daemon tracks state for various elements. These are arranged in a hierarchy:

```mermaid
  graph TD

  process["build process"]
  
  session["build session"]
  process --> session
  
  build_tree["build tree"]
  session --> build_tree
  
  build1["root build"]
  build_tree --> build1
  
  project1["root project"]
  build1 --> project1
  
  project2["project"]
  build1 --> project2

              + " map in that class.");
    }
    Object result;
    try {
      result = supplier.get();
    } catch (Throwable t) {
      if (predicate.apply(t)) {
        // We are careful to set up INSTANCE_OF to match each Predicate to its target Class.
        @SuppressWarnings("unchecked")
        T caught = (T) t;
        return caught;
      }
      throw new AssertionError(

import java.util.concurrent.Executor;
import org.jspecify.annotations.Nullable;

/**
 * A subscriber method on a specific object, plus the executor that should be used for dispatching
 * events to it.
 *
 * <p>Two subscribers are equivalent when they refer to the same method on the same object (not
 * class). This property is used to ensure that no subscriber method is registered more than once.
 *
 * @author Colin Decker
 */
class Subscriber {

              + " map in that class.");
    }
    Object result;
    try {
      result = supplier.get();
    } catch (Throwable t) {
      if (predicate.apply(t)) {
        // We are careful to set up INSTANCE_OF to match each Predicate to its target Class.
        @SuppressWarnings("unchecked")
        T caught = (T) t;
        return caught;
      }
      throw new AssertionError(

        assertEquals(0, response.getNumEntries());
    }

    @Test
    void testGetResults() {
        // Test the getResults method
        // By default, it should return null until results are set
        assertNull(response.getResults());
    }

    @Test
    void testGetLastName() {
        // Test the getLastName method
        // By default, it should return null

        // Assert
        assertSame(response, out);
        verify(tree).send(request, param);
    }

    @Test
    @DisplayName("unwrap and close are available via SmbTree")
    void unwrap_and_close_interactions() {
        // Arrange
        when(tree.unwrap(SmbTreeInternal.class)).thenReturn(tree);

        // Act

        byte[] buffer = new byte[10];
        assertThrows(NullPointerException.class, () -> cmd.writeParametersWireFormat(buffer, 0));
    }

    @Nested
    @DisplayName("read methods are no‑ops")
    class ReadMethods {
        Trans2GetDfsReferral cmd = new Trans2GetDfsReferral("/foo");

        @Test
        void setup() {
            assertEquals(0, cmd.readSetupWireFormat(new byte[10], 0, 0));

    private String deploymentTimestamp;

    @Override
    public void transformForResolve(Artifact artifact, RepositoryRequest request) throws ArtifactResolutionException {
        // Only select snapshots that are unresolved (eg 1.0-SNAPSHOT, not 1.0-20050607.123456)
        if (artifact.isSnapshot() && artifact.getBaseVersion().equals(artifact.getVersion())) {
            try {
                String version = resolveVersion(artifact, request);

        // to specify the absolute path to these files in a customized components.xml
        // file. Ideally, we'd do full pattern-evaluation against the sysprops, but this
        // is a first step. There are several replacements below, in order to normalize
        // the path character before we operate on the string as a regex input, and
        // in order to avoid surprises with the File construction...

                .build();
    }

    public Logger logger;

    // this one "evolves" as process progresses (instance is immutable but instances are replaced)
    public ProtoSession protoSession;
    // here we track which user properties we pushed to Java System Properties (internal only)
    public Set<String> pushedUserProperties;