# Build execution model

At the highest level, Gradle's execution model is quite simple:

Below is the protocol in some more detail:

1. The client looks for a compatible idle daemon. If there isn't one, it starts a new daemon.
2. The client connects to the idle daemon and sends it a request to do some work. If the daemon is no longer running, the client starts again.

      </plugin>
      <plugin>
        <artifactId>maven-javadoc-plugin</artifactId>
        <executions>
          <execution>
            <id>attach-javadocs</id>
          </execution>
          <execution>
            <goals><goal>javadoc</goal></goals>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
  <profiles>
    <profile>

              </configuration>
            </execution>
            <execution>
              <id>default-testCompile</id>
              <configuration>
                <compilerArgs>
                  <compilerArg>-Xlint:-removal</compilerArg>
                </compilerArgs>
              </configuration>
            </execution>
          </executions>
        </plugin>
        <plugin>

              </configuration>
            </execution>
            <execution>
              <id>default-testCompile</id>
              <configuration>
                <compilerArgs>
                  <compilerArg>-Xlint:-removal</compilerArg>
                </compilerArgs>
              </configuration>
            </execution>
          </executions>
        </plugin>
        <plugin>

              <includes>org/jline/nativ/**</includes>
            </configuration>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <executions>
          <execution>
            <id>test-compile</id>
            <goals>
              <goal>testCompile</goal>

import org.apache.maven.api.xml.XmlService;
import org.apache.maven.execution.BuildFailure;
import org.apache.maven.execution.BuildSuccess;
import org.apache.maven.execution.ExecutionEvent;
import org.apache.maven.execution.MavenExecutionRequest;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.execution.ProjectDependencyGraph;
import org.apache.maven.execution.ProjectExecutionEvent;

            Element cleanPlugin = plugins.child("plugin").orElse(null);
            Element executions = cleanPlugin.child("executions").orElse(null);
            Element execution = executions.child("execution").orElse(null);
            Element phase = execution.child("phase").orElse(null);

            assertEquals("pre-clean", phase.textContent(), "Phase should remain as pre-clean for 4.0.0");

                <configuration/>
                <executions>
                    <execution>
                        <id>compile</id>
                        <phase>process-sources</phase>
                        <goals>
                            <goal>compile</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>test-compile</id>

            </configuration>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <artifactId>maven-source-plugin</artifactId>
        <executions>
          <execution>
            <id>attach-test-sources</id>
            <phase>post-integration-test</phase>
            <goals><goal>test-jar</goal></goals>
          </execution>
        </executions>
      </plugin>
      <plugin>

        <executions>
          <execution>
            <id>default-compile</id>
            <configuration>
              <compilerArgs combine.children="append" combine.self="append">
                <arg>-XDignore.symbol.file</arg>
              </compilerArgs>
            </configuration>
          </execution>
          <execution>
            <id>compile-java9</id>