org.sqlproc.engine.type
Class SqlMetaType

java.lang.Object
  org.sqlproc.engine.type.SqlMetaType

Direct Known Subclasses:

JdbcDefaultType, SqlInternalType

public abstract class SqlMetaType
extends Object

The common ancestor of all META types. These internal types are devoted for the special processing of the input/output values.

Author:

Vladimir Hudec

Field Summary

protected org.slf4j.Logger

logger The internal slf4j logger.

Constructor Summary

SqlMetaType()

Method Summary

abstract void	addScalar(SqlQuery query, String dbName, Class<?> attributeType) Declares a scalar query result, which is an SQL query execution output value.
abstract void	setParameter(SqlRuntimeContext runtimeCtxCtx, SqlQuery query, String paramName, Object inputValue, Class<?> inputType, boolean ingoreError) Binds an input value to a named query parameter.
abstract void	setResult(SqlRuntimeContext runtimeCtxCtx, Object resultInstance, String attributeName, Object resultValue, boolean ingoreError) Initializes the attribute of the result class with output value from the SQL query execution.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

logger

protected final org.slf4j.Logger logger

The internal slf4j logger.

Constructor Detail

SqlMetaType

public SqlMetaType()

Method Detail

addScalar

public abstract void addScalar(SqlQuery query,
                               String dbName,
                               Class<?> attributeType)

Declares a scalar query result, which is an SQL query execution output value.

Parameters:

query - the SQL Engine query, an adapter or proxy to the internal JDBC or ORM staff

dbName - the name of a database query output, it can be the column name or the alias name

attributeType - the Java type of of the attribute in the result class

setResult

public abstract void setResult(SqlRuntimeContext runtimeCtxCtx,
                               Object resultInstance,
                               String attributeName,
                               Object resultValue,
                               boolean ingoreError)
                        throws SqlRuntimeException

Initializes the attribute of the result class with output value from the SQL query execution.

Parameters:

runtimeCtxCtx - the public runtimeCtx context

resultInstance - the instance of the result class

attributeName - the name of the attribute in the result class

resultValue - the query execution output value

ingoreError - ignore improper output value handling

Throws:

SqlRuntimeException - in the case of any problem with the output values handling

setParameter

public abstract void setParameter(SqlRuntimeContext runtimeCtxCtx,
                                  SqlQuery query,
                                  String paramName,
                                  Object inputValue,
                                  Class<?> inputType,
                                  boolean ingoreError)
                           throws SqlRuntimeException

Binds an input value to a named query parameter.

Parameters:

runtimeCtxCtx - the public runtimeCtx context

query - the SQL Engine query, an adapter or proxy to the internal JDBC or ORM staff

paramName - the name of the parameter

inputValue - the possibly-null parameter value, a dynamic input value

ingoreError - ignore improper input value handling

Throws:

SqlRuntimeException - in the case of any problem with the input values handling