org.apache.ibatis.executor.ErrorContext Maven / Gradle / Ivy

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package org.apache.ibatis.executor;

public class ErrorContext {

  private static String NEWLINE; // Can't be final due to a weird Java compiler issue.
  private static final ThreadLocal LOCAL = new ThreadLocal();

  private ErrorContext stored;
  private String resource;
  private String activity;
  private String object;
  private String message;
  private String sql;
  private Throwable cause;

  static {
    try {
      NEWLINE = System.getProperty("line.separator");
    } catch (Throwable t) {
      NEWLINE = "\n";
    }
  }

  private ErrorContext() {
  }

  public static ErrorContext instance() {
    ErrorContext context = LOCAL.get();
    if (context == null) {
      context = new ErrorContext();
      LOCAL.set(context);
    }
    return context;
  }

  public ErrorContext store() {
    stored = this;
    LOCAL.set(new ErrorContext());
    return LOCAL.get();
  }

  public ErrorContext recall() {
    if (stored != null) {
      LOCAL.set(stored);
      stored = null;
    }
    return LOCAL.get();
  }

  public ErrorContext resource(String resource) {
    this.resource = resource;
    return this;
  }

  public ErrorContext activity(String activity) {
    this.activity = activity;
    return this;
  }

  public ErrorContext object(String object) {
    this.object = object;
    return this;
  }

  public ErrorContext message(String message) {
    this.message = message;
    return this;
  }

  public ErrorContext sql(String sql) {
    this.sql = sql;
    return this;
  }

  public ErrorContext cause(Throwable cause) {
    this.cause = cause;
    return this;
  }

  public ErrorContext reset() {
    resource = null;
    activity = null;
    object = null;
    message = null;
    sql = null;
    cause = null;
    return this;
  }

  public String toString() {
    StringBuffer description = new StringBuffer();

    // message
    if (this.message != null) {
      description.append(NEWLINE);
      description.append("### ");
      description.append(this.message);
    }

    // resource
    if (resource != null) {
      description.append(NEWLINE);
      description.append("### The error may exist in ");
      description.append(resource);
    }

    // object
    if (object != null) {
      description.append(NEWLINE);
      description.append("### The error may involve ");
      description.append(object);
    }

    // activity
    if (activity != null) {
      description.append(NEWLINE);
      description.append("### The error occurred while ");
      description.append(activity);
    }

    // activity
    if (sql != null) {
      description.append(NEWLINE);
      description.append("### SQL: ");
      description.append(sql.replace('\n', ' ').replace('\r', ' ').replace('\t', ' ').trim());
    }

    // cause
    if (cause != null) {
      description.append(NEWLINE);
      description.append("### Cause: ");
      description.append(cause.toString());
    }

    return description.toString();
  }

}