com.sun.jdo.spi.persistence.support.sqlstore.sql.generator

Class QueryPlan

java.lang.Object

com.sun.jdo.spi.persistence.support.sqlstore.sql.generator.QueryPlan

Direct Known Subclasses:

SelectQueryPlan, UpdateQueryPlan

public abstract class QueryPlan
extends Object

This class is used to generate SQL statements.

Field Summary

Fields

Modifier and Type	Field and Description
static int	ACT_DELETE
static int	ACT_INSERT
static int	ACT_NOOP
static int	ACT_SELECT
static int	ACT_UPDATE
protected int	action
protected ClassDesc	config
protected static ResourceBundle	messages I18N message handler.
protected static int	ST_BUILT
ArrayList	statements Array of Statement.
protected int	status Bitmask containing one of ST_BUILT, SelectQueryPlan.ST_C_BUILT, SelectQueryPlan.ST_OC_BUILT, SelectQueryPlan.ST_JOINED
protected SQLStoreManager	store
protected ArrayList	tables Array of QueryTable.

Constructor Summary

Constructors

Constructor and Description
QueryPlan(ActionDesc desc, SQLStoreManager store)

Method Summary

Modifier and Type	Method and Description
QueryTable	addQueryTable(TableDesc tableDesc)
QueryTable	addQueryTable(org.netbeans.modules.dbschema.TableElement tableElement, ClassDesc persistenceConfig) Identifies a database table which will become part of this query plan.
void	addQueryTables(ArrayList queryTables) Add all the tables from queryTables to the current query plan.
protected Statement	addStatement(QueryTable t)
abstract void	build()
protected Statement	createStatement(QueryTable t)
QueryTable	findQueryTable(TableDesc tableDesc) Finds the QueryTable object that this query plan is using to describe the TableDesc indicated by the tableDesc parameter.
QueryTable	findQueryTable(org.netbeans.modules.dbschema.TableElement tableElement) Finds the QueryTable object that this query plan is using to describe the TableElement indicated by the tableElement parameter.
int	getAction()
ClassDesc	getConfig()
protected Statement	getStatement(QueryTable t)
ArrayList	getStatements()
protected abstract Statement	newStatement()
protected void	processStatements() This method goes through the statement list and tries to set up relationship between statements based on secondary table keys.

Methods inherited from class java.lang.Object

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

Field Detail

ACT_UPDATE

public static final int ACT_UPDATE

See Also:

Constant Field Values

ACT_INSERT

public static final int ACT_INSERT

See Also:

Constant Field Values

ACT_DELETE

public static final int ACT_DELETE

See Also:

Constant Field Values

ACT_SELECT

public static final int ACT_SELECT

See Also:

Constant Field Values

ACT_NOOP

public static final int ACT_NOOP

See Also:

Constant Field Values

ST_BUILT

protected static final int ST_BUILT

See Also:

Constant Field Values

statements

public ArrayList statements

Array of Statement.

config

protected ClassDesc config

status

protected int status

Bitmask containing one of ST_BUILT, SelectQueryPlan.ST_C_BUILT, SelectQueryPlan.ST_OC_BUILT, SelectQueryPlan.ST_JOINED

action

protected int action

store

protected SQLStoreManager store

tables

protected ArrayList tables

Array of QueryTable.

messages

protected static final ResourceBundle messages

I18N message handler.

Constructor Detail

QueryPlan

public QueryPlan(ActionDesc desc,
                 SQLStoreManager store)

Method Detail

addQueryTable

public QueryTable addQueryTable(TableDesc tableDesc)

addQueryTable

public QueryTable addQueryTable(org.netbeans.modules.dbschema.TableElement tableElement,
                                ClassDesc persistenceConfig)

Identifies a database table which will become part of this query plan. We will build a QueryTable object describing its use and return it. Note: No join is constructed at this point for the table added.

Parameters:

tableElement - Identifies which table is being added.

persistenceConfig - If we are adding a foreign table the persistenceConfig parameter holds the PersistenceConfig for the foreign Persistence Class.

addQueryTables

public void addQueryTables(ArrayList queryTables)

Add all the tables from queryTables to the current query plan. Useful when transfering tables when joining query plans together.

Parameters:

queryTables - Query tables from the foreign plan to be added.

findQueryTable

public QueryTable findQueryTable(org.netbeans.modules.dbschema.TableElement tableElement)

Finds the QueryTable object that this query plan is using to describe the TableElement indicated by the tableElement parameter.

findQueryTable

public QueryTable findQueryTable(TableDesc tableDesc)

Finds the QueryTable object that this query plan is using to describe the TableDesc indicated by the tableDesc parameter.

getStatements

public ArrayList getStatements()

addStatement

protected Statement addStatement(QueryTable t)

newStatement

protected abstract Statement newStatement()

createStatement

protected Statement createStatement(QueryTable t)

getStatement

protected Statement getStatement(QueryTable t)

build

public abstract void build()

processStatements

protected void processStatements()

This method goes through the statement list and tries to set up relationship between statements based on secondary table keys.

getAction

public int getAction()

getConfig

public ClassDesc getConfig()