Example usage for org.apache.ibatis.mapping BoundSql getParameterMappings

Introduction

In this page you can find the example usage for org.apache.ibatis.mapping BoundSql getParameterMappings.

Prototype

public List<ParameterMapping> getParameterMappings()

Source Link

Usage

From source file:plum.mybatis.SQLHelp.java

License:Apache License

/**
 * SQL?(?)/* w  ww  .java  2  s.c  o m*/
 *
 * @param ps               SQL ?
 * @param mappedStatement MappedStatement
 * @param boundSql        SQL
 * @param parameterObject ?
 * @throws java.sql.SQLException ?
 * @see org.apache.ibatis.executor.parameter.DefaultParameterHandler
 */
@SuppressWarnings("unchecked")
public static void setParameters(PreparedStatement ps, MappedStatement mappedStatement, BoundSql boundSql,
        Object parameterObject) throws SQLException {
    ErrorContext.instance().activity("setting parameters").object(mappedStatement.getParameterMap().getId());
    List<ParameterMapping> parameterMappings = boundSql.getParameterMappings();
    if (parameterMappings != null) {
        Configuration configuration = mappedStatement.getConfiguration();
        TypeHandlerRegistry typeHandlerRegistry = configuration.getTypeHandlerRegistry();
        MetaObject metaObject = parameterObject == null ? null : configuration.newMetaObject(parameterObject);
        for (int i = 0; i < parameterMappings.size(); i++) {
            ParameterMapping parameterMapping = parameterMappings.get(i);
            if (parameterMapping.getMode() != ParameterMode.OUT) {
                Object value;
                String propertyName = parameterMapping.getProperty();
                PropertyTokenizer prop = new PropertyTokenizer(propertyName);
                if (parameterObject == null) {
                    value = null;
                } else if (typeHandlerRegistry.hasTypeHandler(parameterObject.getClass())) {
                    value = parameterObject;
                } else if (boundSql.hasAdditionalParameter(propertyName)) {
                    value = boundSql.getAdditionalParameter(propertyName);
                } else if (propertyName.startsWith(ForEachSqlNode.ITEM_PREFIX)
                        && boundSql.hasAdditionalParameter(prop.getName())) {
                    value = boundSql.getAdditionalParameter(prop.getName());
                    if (value != null) {
                        value = configuration.newMetaObject(value)
                                .getValue(propertyName.substring(prop.getName().length()));
                    }
                } else {
                    value = metaObject == null ? null : metaObject.getValue(propertyName);
                }
                TypeHandler typeHandler = parameterMapping.getTypeHandler();
                if (typeHandler == null) {
                    throw new ExecutorException("There was no TypeHandler found for parameter " + propertyName
                            + " of statement " + mappedStatement.getId());
                }
                typeHandler.setParameter(ps, i + 1, value, parameterMapping.getJdbcType());
            }
        }
    }
}