m-m-m/bean#7: getReadOnly() and WritableBean constructor

bean/src/main/java/io/github/mmm/entity/bean/AdvancedEntityBean.java

@@ -1,92 +1,111 @@
-/* Copyright (c) The m-m-m Team, Licensed under the Apache License, Version 2.0
- * http://www.apache.org/licenses/LICENSE-2.0 */
-package io.github.mmm.entity.bean;
-
-import io.github.mmm.bean.AdvancedBean;
-import io.github.mmm.bean.Bean;
-import io.github.mmm.bean.BeanClass;
-import io.github.mmm.bean.StandardPropertyBuilders;
-import io.github.mmm.entity.bean.impl.EntityPropertyBuildersImpl;
-import io.github.mmm.entity.id.Id;
-import io.github.mmm.entity.id.LongVersionId;
-import io.github.mmm.entity.property.builder.EntityPropertyBuilders;
-import io.github.mmm.entity.property.id.IdProperty;
-import io.github.mmm.entity.property.id.PkProperty;
-import io.github.mmm.property.PropertyMetadata;
-
-/**
- * Implementation of {@link EntityBean} as simple {@link Bean}.
- *
- * @since 1.0.0
- */
-public class AdvancedEntityBean extends AdvancedBean implements EntityBean {
-
-  /** The {@link IdProperty property} with the {@link Id primary key}. */
-  public final PkProperty Id;
-
-  /**
-   * The constructor.
-   */
-  public AdvancedEntityBean() {
-
-    this(null, null);
-  }
-
-  /**
-   * The constructor.
-   *
-   * @param pkProperty the {@link #Id() ID property}.
-   */
-  public AdvancedEntityBean(PkProperty pkProperty) {
-
-    this(null, pkProperty);
-  }
-
-  /**
-   * The constructor.
-   *
-   * @param type the {@link #getType() type}.
-   */
-  public AdvancedEntityBean(BeanClass type) {
-
-    this(type, null);
-  }
-
-  /**
-   * The constructor.
-   *
-   * @param type the {@link #getType() type}.
-   * @param pkProperty the {@link #Id() ID property}.
-   */
-  private AdvancedEntityBean(BeanClass type, PkProperty pkProperty) {
-
-    super(type);
-    if (pkProperty == null) {
-      // default
-      Id<?> id = LongVersionId.getEmpty().withEntityType(getClass());
-      pkProperty = new PkProperty(id, PropertyMetadata.of(this));
-    } else {
-      assert pkProperty.getName().equals(PkProperty.NAME);
-    }
-    this.Id = add(pkProperty);
-  }
-
-  @Override
-  public PkProperty Id() {
-
-    return this.Id;
-  }
-
-  @Override
-  protected EntityPropertyBuilders add() {
-
-    return (EntityPropertyBuilders) super.add();
-  }
-
-  @Override
-  protected StandardPropertyBuilders createPropertyBuilders() {
-
-    return new EntityPropertyBuildersImpl(this);
-  }
-
-}
+/* Copyright (c) The m-m-m Team, Licensed under the Apache License, Version 2.0
+ * http://www.apache.org/licenses/LICENSE-2.0 */
+package io.github.mmm.entity.bean;
+
+import io.github.mmm.bean.AdvancedBean;
+import io.github.mmm.bean.Bean;
+import io.github.mmm.bean.BeanClass;
+import io.github.mmm.bean.StandardPropertyBuilders;
+import io.github.mmm.bean.WritableBean;
+import io.github.mmm.entity.bean.impl.EntityPropertyBuildersImpl;
+import io.github.mmm.entity.id.Id;
+import io.github.mmm.entity.id.LongVersionId;
+import io.github.mmm.entity.property.builder.EntityPropertyBuilders;
+import io.github.mmm.entity.property.id.IdProperty;
+import io.github.mmm.entity.property.id.PkProperty;
+import io.github.mmm.property.PropertyMetadata;
+
+/**
+ * Implementation of {@link EntityBean} as simple {@link Bean}.
+ *
+ * @since 1.0.0
+ */
+public class AdvancedEntityBean extends AdvancedBean implements EntityBean {
+
+  /** The {@link IdProperty property} with the {@link Id primary key}. */
+  public final PkProperty Id;
+
+  /**
+   * The constructor.
+   */
+  public AdvancedEntityBean() {
+
+    this(null, null, null);
+  }
+
+  /**
+   * The constructor.
+   *
+   * @param writable the {@link WritableBean} to wrap as {@link #isReadOnly() read-only} bean or {@code null} to create
+   *        a mutable bean.
+   */
+  public AdvancedEntityBean(WritableBean writable) {
+
+    this(writable, null, null);
+  }
+
+  /**
+   * The constructor.
+   *
+   * @param pkProperty the {@link #Id() ID property}.
+   */
+  public AdvancedEntityBean(PkProperty pkProperty) {
+
+    this(null, null, pkProperty);
+  }
+
+  /**
+   * The constructor.
+   *
+   * @param type the {@link #getType() type}.
+   */
+  public AdvancedEntityBean(BeanClass type) {
+
+    this(null, type, null);
+  }
+
+  /**
+   * The constructor.
+   *
+   * @param writable the {@link WritableBean} to wrap as {@link #isReadOnly() read-only} bean or {@code null} to create
+   *        a mutable bean.
+   * @param type the {@link #getType() type}.
+   * @param pkProperty the {@link #Id() ID property}.
+   */
+  private AdvancedEntityBean(WritableBean writable, BeanClass type, PkProperty pkProperty) {
+
+    super(writable, type);
+    if (pkProperty == null) {
+      if (writable == null) {
+        // default
+        Id<?> id = LongVersionId.getEmpty().withEntityType(getClass());
+        pkProperty = new PkProperty(id, PropertyMetadata.of(this));
+      } else {
+        pkProperty = ((AdvancedEntityBean) writable).Id;
+      }
+    } else {
+      assert pkProperty.getName().equals(PkProperty.NAME);
+      assert (writable == null);
+    }
+    this.Id = add(pkProperty);
+  }
+
+  @Override
+  public PkProperty Id() {
+
+    return this.Id;
+  }
+
+  @Override
+  protected EntityPropertyBuilders add() {
+
+    return (EntityPropertyBuilders) super.add();
+  }
+
+  @Override
+  protected StandardPropertyBuilders createPropertyBuilders() {
+
+    return new EntityPropertyBuildersImpl(this);
+  }
+
+}