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java.lang.Objectorg.h2.command.Prepared
org.h2.command.dml.ExplainPlan
public class ExplainPlan
This class represents the statement EXPLAIN
Field Summary |
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Fields inherited from class org.h2.command.Prepared |
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headPos, parameters, prepareAlways, session, sqlStatement |
Constructor Summary | |
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ExplainPlan(Session session)
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Method Summary | |
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boolean |
isQuery()
Check if this object is a query. |
boolean |
isReadOnly()
Check if this command is read only. |
boolean |
isTransactional()
Check if this command is transactional. |
void |
prepare()
Prepare this statement. |
LocalResult |
query(int maxrows)
Execute the query. |
LocalResult |
queryMeta()
Get an empty result set containing the meta data. |
void |
setCommand(Prepared command)
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Methods inherited from class org.h2.command.Prepared |
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checkCanceled, checkParameters, getCurrentObjectId, getCurrentRowNumber, getObjectId, getParameters, getPlanSQL, getSQL, getSQL, getSQL, needRecompile, setCommand, setCurrentRowNumber, setHeadPos, setObjectId, setParameterList, setPrepareAlways, setRow, setSession, setSQL, toString, update |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public ExplainPlan(Session session)
Method Detail |
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public void setCommand(Prepared command)
public void prepare() throws java.sql.SQLException
Prepared
prepare
in class Prepared
java.sql.SQLException
public LocalResult queryMeta() throws java.sql.SQLException
Prepared
queryMeta
in class Prepared
java.sql.SQLException
public LocalResult query(int maxrows) throws java.sql.SQLException
Prepared
query
in class Prepared
maxrows
- the maximum number of rows to return
java.sql.SQLException
- if it is not a querypublic boolean isQuery()
Prepared
isQuery
in class Prepared
public boolean isTransactional()
Prepared
isTransactional
in class Prepared
public boolean isReadOnly()
Prepared
isReadOnly
in class Prepared
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