org.teiid.query.resolver.command
Class XMLQueryResolver

java.lang.Object
  org.teiid.query.resolver.command.XMLQueryResolver

All Implemented Interfaces:

CommandResolver

public class XMLQueryResolver
extends java.lang.Object
implements CommandResolver

Constructor Summary

XMLQueryResolver()

Method Summary

static java.util.Collection<ElementSymbol>	collectTempElements(GroupSymbol group, QueryMetadataInterface metadata)
void	resolveCommand(Command command, TempMetadataAdapter metadata, boolean resolveNullLiterals) Resolve the command using the metadata.
void	resolveCommand(Query query, GroupSymbol docGroup, TempMetadataAdapter metadata)
static void	resolveXMLCriteria(LanguageObject criteria, GroupContext externalGroups, org.teiid.query.resolver.command.XMLQueryResolver.ResolvingNode validElements, QueryMetadataInterface metadata) Resolve the criteria specified on the XML query.

Methods inherited from class java.lang.Object

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

Constructor Detail

XMLQueryResolver

public XMLQueryResolver()

Method Detail

resolveCommand

public void resolveCommand(Command command,
                           TempMetadataAdapter metadata,
                           boolean resolveNullLiterals)
                    throws QueryMetadataException,
                           QueryResolverException,
                           TeiidComponentException

Description copied from interface: CommandResolver

Resolve the command using the metadata.

Specified by:

resolveCommand in interface CommandResolver

Parameters:

command - The command to resolve

metadata - Metadata

resolveNullLiterals - true if the resolver should consider replacing null literals with more appropriate types

Throws:

QueryMetadataException - If there is a metadata problem

QueryResolverException - If the query cannot be resolved

TeiidComponentException - If there is an internal error

See Also:

CommandResolver.resolveCommand(org.teiid.query.sql.lang.Command, TempMetadataAdapter, boolean)

resolveCommand

public void resolveCommand(Query query,
                           GroupSymbol docGroup,
                           TempMetadataAdapter metadata)
                    throws QueryMetadataException,
                           QueryResolverException,
                           TeiidComponentException

Throws:

QueryMetadataException

QueryResolverException

TeiidComponentException

collectTempElements

public static java.util.Collection<ElementSymbol> collectTempElements(GroupSymbol group,
                                                                      QueryMetadataInterface metadata)
                                                               throws QueryMetadataException,
                                                                      TeiidComponentException

Throws:

QueryMetadataException

TeiidComponentException

resolveXMLCriteria

public static void resolveXMLCriteria(LanguageObject criteria,
                                      GroupContext externalGroups,
                                      org.teiid.query.resolver.command.XMLQueryResolver.ResolvingNode validElements,
                                      QueryMetadataInterface metadata)
                               throws QueryMetadataException,
                                      TeiidComponentException,
                                      QueryResolverException

Resolve the criteria specified on the XML query. The elements specified on the criteria should be present on one of the mapping node objects passed to this method, or else be an element on a temporary table at the root of the document model (if a temp table exists there).

A QueryResolverException will be thrown under the following circumstances:

1. the elements of the XML criteria cannot be resolved
2. the "@" attribute prefix is used to specify that the node is an attribute, but a document node is found that is an element
3. an element is supplied in the criteria and is ambiguous (multiple document nodes and/or root temp table elements exist which have that name)

If an element is supplied in the criteria and is ambiguous (multiple document nodes and/or root temp table elements of that name exist)

Parameters:

criteria - The criteria object that should be resolved

group - The group on the query.

metadata - QueryMetadataInterface the metadata(for resolving criteria on temp groups)

Throws:

QueryResolverException - if any of the above fail conditions are met

QueryMetadataException

TeiidComponentException