org.tentackle.persist.wurblet.DbSelectList Maven / Gradle / Ivy

Go to download
// wurblet generated by Wurbelizer 21.6.0.0, see https://wurbelizer.org

package org.tentackle.persist.wurblet;

import org.tentackle.wurblet.*;
import org.tentackle.buildsupport.*;
import java.util.*;
import java.io.*;
import org.tentackle.common.*;
import org.wurbelizer.wurbel.*;
import org.tentackle.sql.*;
import org.tentackle.model.*;
import org.wurbelizer.wurblet.*;

/**
 * ({@code @wurblet}) Generate code to select a list of low-level persistent objects.
 * 
 * usage:

 * @wurblet <tag> DbSelectList
 *     [--private] [--append=<sqltext>] [--classvar=<classvariables>]
 *     [--sort] [--lock] [--resultset] [--bounded] [--limit] [--offset]
 *     <expression>
 * 

 * arguments:
 * 

 * --private: makes the method private (default is public).
 * --append=<sqltext>: appends an sql-string.
 * --classvar=<classvariables>: reference to classvariables, if pick the statement-IDs from there.
 * --sort: sort according to orderBy()-method.
 * --lock: generates SELECT FOR UPDATE.
 * --limit: adds a parameter to limit the number of objects.
 * --offset: adds a parameter to skip the first objects.
 * --resultset: returns the ResultSetWrapper instead of a List.
 * --bounded: returns a bounded List<? extends mainClass> instead of List<mainClass>.
 * <expression>: see {@link WurbletArgumentParser}.
 * 
 * For more options, see {@link DbModelWurblet}.
 */
public class DbSelectList extends DbModelWurblet {

  public DbSelectList() {
    setConfiguration("pathAllowed");
  }

  @Override
  public void run() throws WurbelException {
    super.run();
    try {
      wurbel();
    }
    catch (Throwable t) {
      if (t instanceof WurbelException) {
        throw (WurbelException) t;
      }
      throw new WurbelException("wurblet " + this + " failed", t);
    }
  }

  // ----------------- begin wurblet code -----------------

  private void wurbel() throws WurbelException, ModelException {

    String className = getClassName();
    String methodName = getMethodName();

    String  scope       = "public";
    String  classVar    = null;
    boolean sort        = false;
    boolean lock        = false;
    String  append      = null;
    boolean limit       = false;
    boolean offset      = false;
    boolean bounded     = false;
    boolean resultSet   = false;

    for (String arg: getOptionArgs())  {
      if (arg.equals("private")) {
        scope = "private";
        setRemote(false);
      }
      else if (arg.equals("sort")) {
        if (isWithDefaultSorting()) {
          if (isWithSorting()) {
            throw new WurbelException("either default sorting (--sort) or explicit sorting (+/-AN) allowed");
          }
          sort = true;
        }
        else {
          throw new WurbelException("no sorting configured in model for " + getEntity());
        }
      }
      else if (arg.equals("lock")) {
        lock = true;
      }
      else if (arg.equals("limit")) {
        limit = true;
      }
      else if (arg.equals("offset")) {
        offset = true;
      }
      else if (arg.equals("bounded")) {
        bounded = true;
      }
      else if (arg.equals("resultset")) {
        resultSet = true;
      }
      else if (arg.startsWith("append=")) {
        append = arg.substring(7);
      }
      else if (arg.startsWith("classvar="))  {
        classVar = arg.substring(9);
      }
    }

    if (resultSet) {
      setRemote(false);     // disable remoting for sure
    }

    if (classVar == null) {
      classVar = "";
    }
    else  {
      classVar += ".";    // add dot to access class var
    }

    String params = buildMethodParameters(limit, offset);
    String iparms = buildInvocationParameters(limit, offset);
    String statementId = createStatementId();

    String listType     = resultSet ? "ResultSetWrapper" :
                            ((isTracked() ? "TrackedArrayList" : "List") + "<" + (bounded ? "? extends " : "") + className + ">");
    String varListType  = (isTracked() ? "TrackedArrayList" : "List") + "<" + className + ">";
    String rmiListType  = (isTracked() ? "TrackedArrayList" : "List") + "<" + (bounded ? "? extends " : "") + (isGenerified() ? "P" : className) + ">";

    out.print(source[0]); // 102:2 = "  "
    out.print(scope);
    out.print(source[1]); // 103:11 = " "
    out.print(listType);
    out.print(source[2]); // 103:24 = " "
    out.print(methodName);
    out.print(source[3]); // 103:39 = "("
    out.print(params);
    out.print(source[4]); // 103:50 = ") {    Db db = getSession();"
    if (isRemote()) {
      // create includes
      RemoteIncludes genInc = new RemoteIncludes(this);
      PrintStream implOut      = genInc.getImplStream();
      PrintStream remoteOut    = genInc.getRemoteStream();
      out.print(source[5]); // 111:2 = "    if (db.isRemote())  {      try {"
      remoteOut.print(source[6]); // 114:16 = "  "
      remoteOut.print(rmiListType);
      remoteOut.print(source[7]); // 115:17 = " "
      remoteOut.print(methodName);
      remoteOut.print(source[8]); // 115:32 = "("
      remoteOut.print(params);
      remoteOut.print(source[9]); // 115:43 = ") throws RemoteException;"
      implOut.print(source[10]); // 116:14 = "  @Override  public "
      implOut.print(rmiListType);
      implOut.print(source[11]); // 119:24 = " "
      implOut.print(methodName);
      implOut.print(source[12]); // 119:39 = "("
      implOut.print(params);
      implOut.print(source[13]); // 119:50 = ") throws RemoteException {    try {   ..."
      implOut.print(methodName);
      implOut.print(source[14]); // 121:36 = "("
      implOut.print(iparms);
      implOut.print(source[15]); // 121:47 = ");    }    catch (RuntimeException e) ..."
      out.print(source[16]); // 127:6 = "        "
      out.print(listType);
      out.print(source[17]); // 128:20 = " list = getRemoteDelegate()."
      out.print(methodName);
      out.print(source[18]); // 128:62 = "("
      out.print(iparms);
      out.print(source[19]); // 128:73 = ");        db.applyTo(list);        ret..."
    } // end if remote
     out.print(source[20]); // 138:2 = "    PreparedStatementWrapper st = getPre..."
     out.print(classVar);
     out.print(statementId);
     out.print(source[21]); // 139:82 = ",      b -> {        StringBuilder sql..."
    if (getEntity().getSuperEntity() != null && getEntity().getHierarchyInheritanceType() == InheritanceType.SINGLE) {
      out.print(source[22]); // genwhere.incl:3:2 = "        sql.append(getSqlClassIdConditio..."
    }
    boolean andPrepended = false;
    if (getContextAttribute() != null) {
        andPrepended = true;
        out.print(source[23]); // genwhere.incl:10:2 = "        sql.append(Backend.SQL_AND)    ..."
        out.print(getColumnNameConstant(getContextAttribute(), 0));
        out.print(source[24]); // genwhere.incl:12:70 = ")           .append(Backend.SQL_EQUAL_P..."
    }

    boolean needParentheses = false;

    if (!getExpressionArguments().isEmpty()) {
      needParentheses = getExpression().needParenthesesAfterAndOperator();
      if (andPrepended || needParentheses) {
        out.print(source[25]); // genwhere.incl:22:2 = "        sql.append(Backend.SQL_AND).appe..."
      }
      else {
        out.print(source[26]); // genwhere.incl:27:2 = "        sql.append(Backend.SQL_AND);"
        if (needParentheses && getEntity().getHierarchyInheritanceType() == InheritanceType.SINGLE) {
          out.print(source[27]); // genwhere.incl:31:2 = "        if (classIdRequired) {         ..."
        }
      }

      // not a lambda because reference to instance of codeWriter within itself
      final CodeGenerator