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Java Source Code / Java Documentation » Database ORM » MMBase » org.mmbase.storage.search.implementation.database

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.mmbase.storage.search.implementation.database .ChainedSqlHandler

All known Subclasses:   org.mmbase.storage.search.implementation.database.informix.excalibur .EtxSqlHandler,  org.mmbase.storage.search.implementation.database.functions .FunctionSqlHandler,
ChainedSqlHandler
public class ChainedSqlHandler implements SqlHandler(Code)
Baseclass for chained sql handlers, these are org.mmbase.storage.search.implementation.database.SqlHandler SqlHandler implementations that wrap SqlHandler objects to create a chain of handlers, following the Chain Of Responsibility design pattern.
This class is provided as a baseclass to for chained handlers. It implements all SqlHandler methods by delegating to its successor, i.e. the next handler in the chain.
author:
   Rob van Maris
version:
   $Id: ChainedSqlHandler.java,v 1.6 2007/06/12 10:59:41 michiel Exp $
since:
   MMBase-1.7
See Also:   org.mmbase.storage.search.implementation.database.SqlHandler

Constructor Summary
public ChainedSqlHandler(SqlHandler successor)
     Creates a new instance of ChainedSqlHandler.

Method Summary
public void appendConstraintToSql(StringBuilder sb, Constraint constraint, SearchQuery query, boolean inverse, boolean inComposite)

public void appendQueryBodyToSql(StringBuilder sb, SearchQuery query, SqlHandler firstInChain)

public String getAllowedValue(String value)

protected SqlHandler getSuccessor()
     Accessor to successor in chain of responsibility.
public int getSupportLevel(int feature, SearchQuery query)

public int getSupportLevel(Constraint constraint, SearchQuery query)

public String toSql(SearchQuery query, SqlHandler firstInChain)


Constructor Detail
ChainedSqlHandler
public ChainedSqlHandler(SqlHandler successor)(Code)
Creates a new instance of ChainedSqlHandler.
Parameters:
  successor - Successor in chain of responsibility.

Method Detail
appendConstraintToSql
public void appendConstraintToSql(StringBuilder sb, Constraint constraint, SearchQuery query, boolean inverse, boolean inComposite) throws SearchQueryException(Code)

appendQueryBodyToSql
public void appendQueryBodyToSql(StringBuilder sb, SearchQuery query, SqlHandler firstInChain) throws SearchQueryException(Code)

getAllowedValue
public String getAllowedValue(String value)(Code)

getSuccessor
protected SqlHandler getSuccessor()(Code)
Accessor to successor in chain of responsibility. The successor.

getSupportLevel
public int getSupportLevel(int feature, SearchQuery query) throws SearchQueryException(Code)

getSupportLevel
public int getSupportLevel(Constraint constraint, SearchQuery query) throws SearchQueryException(Code)

toSql
public String toSql(SearchQuery query, SqlHandler firstInChain) throws SearchQueryException(Code)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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