manytomanyfield.java

来自「RESIN 3.2 最新源码」· Java 代码 · 共 1,189 行 · 第 1/3 页

    out.println("if (" + var + " != null) {");
    out.pushDepth();

    out.println("if (__caucho_state.isPersist()) {");
    out.pushDepth();

    out.println(var + ".setSession(__caucho_session);");
    out.println("return " + var + ";");

    out.popDepth();
    out.println("}");
    out.println();

    // jpa/1622
    out.println("if (" + var + ".getSession() != null");
    out.println("    && " + var + ".getSession() == __caucho_session)");
    out.println("  return " + var + ";");

    out.popDepth();
    out.println("}");

    out.println();
    out.println("com.caucho.amber.AmberQuery query = null;");

    out.println();
    out.println("try {");
    out.pushDepth();

    out.println("if (__caucho_session == null) {");
    out.pushDepth();

    String newEmptyCollection = "new " + collectionImpl;

    if (param != null) {
      newEmptyCollection += "<" + param.getPrintName();
      if (isMap) {
        newEmptyCollection += ", ";
        newEmptyCollection += param2.getPrintName();
      }
      newEmptyCollection += ">";
    }

    newEmptyCollection += "(query";
    if (isMap) {
      newEmptyCollection += "," + getTargetType().getBeanClass().getName();
      newEmptyCollection += ".class.getDeclaredMethod(\"get";
      String getterMapKey = getMapKey();
      getterMapKey = Character.toUpperCase(getterMapKey.charAt(0)) + getterMapKey.substring(1);
      newEmptyCollection += getterMapKey; // "getId");
      newEmptyCollection += "\", (Class []) null)";
    }
    newEmptyCollection += ")";

    // jpa/0s2k, jpa/1622
    out.println("if (" + var + " == null)");
    out.println("  " + var + " = " + newEmptyCollection + ";");

    // if (! isAbstract())
    out.println();
    out.println("return " + var + ";");

    out.popDepth();
    out.println("}");

    out.println();
    out.print("String sql=\"");

    out.print("SELECT c");
    out.print(" FROM " + getSourceType().getName() + " o,");
    out.print("  IN(o." + getName() + ") c");
    out.print(" WHERE ");
    out.print(getRelatedType().getId().generateRawWhere("o"));

    if (_orderByFields != null) {
      out.print(" ORDER BY ");

      for (int i = 0; i < _orderByFields.size(); i++) {
        if (i != 0)
          out.print(", ");

        out.print("c." + _orderByFields.get(i));
        if (Boolean.FALSE.equals(_orderByAscending.get(i)))
          out.print(" DESC");
      }
    }

    out.println("\";");
    out.println("query = __caucho_session.prepareQuery(sql);");

    out.println("int index = 1;");
    getRelatedType().getId().generateSet(out, "query", "index", "this");

    // Ex: _caucho_getChildren = new com.caucho.amber.collection.CollectionImpl
    out.print(var);
    out.print(" = " + newEmptyCollection + ";");

    /*
      out.pushDepth();

      generateAdd(out);
      generateRemove(out);
      generateClear(out);
      // generateSize(out);

      out.popDepth();
      out.println("};");
    */

    out.println();

    // jpa/0i5g
    out.print(var + "_added = ");
    out.println("new java.util.HashSet<" + getTargetType().getBeanClass().getName() + ">();");

    if (isMap)
      out.print(var + "_added.addAll(" + var + ".values());");
    else
      out.println(var + "_added.addAll(" + var + ");");

    out.println();
    out.println("return " + var + ";");

    out.popDepth();
    out.println("} catch (Exception e) {");
    out.println("  throw com.caucho.amber.AmberRuntimeException.create(e);");
    out.println("}");

    out.popDepth();
    out.println("}");

    generateAmberAdd(out);
    generateAmberRemove(out);
    generateAmberRemoveTargetAll(out);
  }


  /**
   * Generates the set property.
   */
  private void generateAdd(JavaWriter out)
    throws IOException
  {
    JType type = getJavaType();
    JType []paramArgs = type.getActualTypeArguments();
    String gType = paramArgs.length > 0 ? paramArgs[0].getPrintName() : "Object";

    out.println("public boolean add(" + gType + " o)");
    out.println("{");
    out.pushDepth();

    String ownerType = getRelatedType().getInstanceClassName();

    out.println("if (! (o instanceof " + ownerType + "))");
    out.println("  throw new java.lang.IllegalArgumentException((o == null ? \"null\" : o.getClass().getName()) + \" must be a " + ownerType + "\");");

    out.println(ownerType + " bean = (" + ownerType + ") o;");

    // XXX: makePersistent

    /*
      ArrayList<Column> keyColumns = getKeyColumns();
      for (int i = 0; i < keyColumns.size(); i++) {
      Column column = keyColumns.get(i);
      AbstractProperty prop = column.getProperty();


      if (prop != null) {
      out.println("bean." + prop.getSetterName() + "(" + ownerType + "__ResinExt.this);");
      }
      }
    */

    out.println("return true;");

    out.popDepth();
    out.println("}");
  }

  /**
   * Generates the set property.
   */
  private void generateRemove(JavaWriter out)
    throws IOException
  {
    JType type = getJavaType();
    JType []paramArgs = type.getActualTypeArguments();
    String gType = paramArgs.length > 0 ? paramArgs[0].getPrintName() : "Object";

    out.println("public boolean remove(" + gType + " o)");
    out.println("{");
    out.pushDepth();

    String ownerType = getSourceType().getInstanceClassName();

    out.println("if (! (o instanceof " + ownerType + "))");
    out.println("  throw new java.lang.IllegalArgumentException((o == null ? \"null\" : o.getClass().getName()) + \" must be a " + ownerType + "\");");

    out.println(ownerType + " bean = (" + ownerType + ") o;");

    // XXX: makePersistent

    /*
      ArrayList<Column> keyColumns = getKeyColumns();
      for (int i = 0; i < keyColumns.size(); i++) {
      Column column = keyColumns.get(i);
      AbstractProperty prop = column.getProperty();

      if (prop != null) {
      out.println("bean." + prop.getSetterName() + "(null);");
      }
      }
    */

    out.println("return true;");

    out.popDepth();
    out.println("}");
  }

  /**
   * Generates the clear method.
   */
  private void generateClear(JavaWriter out)
    throws IOException
  {
    out.println("public void clear()");
    out.println("{");
    out.pushDepth();

    out.println("if (__caucho_session != null) {");
    out.pushDepth();

    out.println("try {");
    out.pushDepth();

    out.println("__caucho_session.flushNoChecks();");

    out.print("String sql=\"");

    out.print("UPDATE ");
    out.print(getSourceType().getName());
    out.print(" SET ");
    /*
      ArrayList<Column> columns = getKeyColumns();
      for (int i = 0; i < columns.size(); i++) {
      if (i != 0)
      out.print(", ");

      out.print(columns.get(i).getName());
      out.print("=null");
      }
    */

    out.print(" WHERE ");

    /*
      for (int i = 0; i < columns.size(); i++) {
      if (i != 0)
      out.print(" and ");

      out.print(columns.get(i).getName());
      out.print("=?");
      }
    */

    out.println("\";");
    out.println("com.caucho.amber.AmberQuery query;");
    out.println("query = __caucho_session.prepareQuery(sql);");

    String ownerType = getSourceType().getInstanceClassName();

    out.println("int index = 1;");
    getRelatedType().getId().generateSet(out, "query", "index", ownerType + ".this");

    out.println("query.executeUpdate();");

    out.println("super.clear();");

    out.popDepth();
    out.println("} catch (java.sql.SQLException e) {");
    out.println("  throw com.caucho.amber.AmberRuntimeException.create(e);");
    out.println("}");

    out.popDepth();
    out.println("} else {");
    out.println("  super.clear();");
    out.println("}");

    out.popDepth();
    out.println("}");
  }

  /**
   * Generates the size method.
   */
  private void generateSize(JavaWriter out)
    throws IOException
  {
    out.println("public int size()");
    out.println("{");
    out.pushDepth();

    out.println("if (__caucho_session == null || isValid())");
    out.println("  return super.size();");

    out.println("try {");
    out.pushDepth();

    out.println("__caucho_session.flushNoChecks();");

    out.print("String sql=\"");

    out.print("SELECT count(*) FROM ");
    out.print(getSourceType().getName());
    out.print(" AS o ");

    out.print(" WHERE ");

    /*
      ArrayList<Column> columns = getKeyColumns();
      for (int i = 0; i < columns.size(); i++) {
      if (i != 0)
      out.print(" and ");

      out.print("o." + columns.get(i).getName());
      out.print("=?");
      }
    */

    out.println("\";");
    out.println("com.caucho.amber.AmberQuery query;");
    out.println("query = __caucho_session.prepareQuery(sql);");

    out.println("int index = 1;");

    // ejb/06h0
    getRelatedType().getId().generateSet(out, "query", getSourceType().getInstanceClassName() + ".this", "index"); // "__ResinExt.this", "index");

    out.println("java.sql.ResultSet rs = query.executeQuery();");

    out.println("if (rs.next())");
    out.println("  return rs.getInt(1);");
    out.println("else");
    out.println("  return 0;");

    out.popDepth();
    out.println("} catch (java.sql.SQLException e) {");
    out.println("  throw com.caucho.amber.AmberRuntimeException.create(e);");
    out.println("}");

    out.popDepth();
    out.println("}");
  }


  /**
   * Generates the (post) cascade operation from
   * parent to this child. This field will only
   * be cascaded first if the operation can be
   * performed with no risk to break FK constraints.
   */
  @Override
  public void generatePostCascade(JavaWriter out,
                                  String aConn,
                                  CascadeType cascadeType)
    throws IOException
  {
    if (cascadeType != CascadeType.PERSIST
        && cascadeType != CascadeType.REMOVE)
      return;

    if (isCascade(cascadeType)) {
      out.println("if (__caucho_state.ordinal() <= com.caucho.amber.entity.EntityState.P_TRANSACTIONAL.ordinal()) {");
      out.pushDepth();

      String amberCascade = "__amber_" + getGetterName();

      if (cascadeType == CascadeType.PERSIST)
        amberCascade += "_add";
      else
        amberCascade += "_remove";

      String getter = "_caucho_field_" + getGetterName(); // generateSuperGetterMethod();

      out.println("if (" + getter + " != null) {");
      out.pushDepth();

      if (cascadeType == CascadeType.PERSIST) {
        // XXX: jpa/0i5c
        // For now, needs to flush the persist() with many-to-many
        // to avoid breaking FK constraints from join tables.
        out.println("if (__caucho_state == com.caucho.amber.entity.EntityState.P_PERSISTING)");
        out.println("  __caucho_create(__caucho_session, __caucho_home);");
      }

      out.println();