toolkit.db.queryoptimization

Class QueryInfo

java.lang.Object

toolkit.db.queryoptimization.QueryInfo

public class QueryInfo
extends java.lang.Object

Class QueryInfo wraps information that a query optimizer needs. Users can retrieve information from it and optimize the query statement.

Constructor Summary

Constructors

Constructor and Description
QueryInfo(java.lang.String sQueryString, java.lang.String userName, ConnectionInfo conInfo, java.util.List<ColumnInfo> columnInfos) Constructs an empty QueryInfo.

Method Summary

Modifier and Type	Method and Description
java.util.List<ColumnInfo>	getColumnInfos() Gets the column information.
ConnectionInfo	getConnectionInfo() Gets ConnectionInfo of this query.
java.lang.String	getQueryString() Gets The query statement to be optimized.
java.lang.String	getUserName() return User ID used when logging onto Logi Report Server.

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryInfo

public QueryInfo(java.lang.String sQueryString,
                 java.lang.String userName,
                 ConnectionInfo conInfo,
                 java.util.List<ColumnInfo> columnInfos)

Constructs an empty QueryInfo.

Method Detail

getQueryString

public java.lang.String getQueryString()

Gets The query statement to be optimized.

Returns:

the name of this query.

getUserName

public java.lang.String getUserName()

return User ID used when logging onto Logi Report Server. When viewing the report in Logi Report Designer, it can return NULL, while when running the report on Logi Report Server, it will return the name used to log onto the server.

getConnectionInfo

public ConnectionInfo getConnectionInfo()

Gets ConnectionInfo of this query.

Returns:

the ConnectionInfo of this query. #ConnectionInfo

getColumnInfos

public java.util.List<ColumnInfo> getColumnInfos()

Gets the column information. Each column information contains a mapping name and column index of where this column should appear in Select clause of the sql string. 1 means the first one, 2 means the second one, etc. -1 means uncertain and it may be decided by the real resultset meta data. Refer to ColumnInfo.