stringmax.java

jBpm是一个灵活可扩展的工作流管理系统。作为jBpm运行时server输入的业务流程使用简单强大的语言表达并打包在流程档案中

package org.jbpm.db.hibernate;

import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Properties;

import org.hibernate.type.StringType;
import org.jbpm.JbpmException;

public class StringMax extends StringType implements org.hibernate.usertype.ParameterizedType {

  private static final long serialVersionUID = 1L;
  
  int length = 4000;

  public void set(PreparedStatement st, Object value, int index) throws SQLException {
    String string = (String)value;
    if ( (value!=null)
         && (string.length()>length)
       ) {
      value = string.substring(0, length);
    }
    super.set(st, value, index);
  }

  public void setParameterValues(Properties parameters) {
    if ( (parameters!=null)
         && (parameters.containsKey("length"))
       ){
      try {
        length = Integer.parseInt(parameters.getProperty("length"));
      } catch (NumberFormatException e) {
        throw new JbpmException("hibernate column type 'string_max' can't parse value '"+parameters.getProperty("length")+"' as a max length.  default is 4000.", e);
      }
    }
  }
}