org.apache.chemistry.opencmis.server.support.query

Class QueryObject

java.lang.Object

org.apache.chemistry.opencmis.server.support.query.QueryObject

public class QueryObject
extends Object

QueryObject is a class used to encapsulate a CMIS query. It is created from an ANTLR parser on an incoming query string. During parsing various informations are collected and stored in objects suitable for evaluating the query (like selected properties, effected types and order statements. A query evaluator can use this information to perform the query and build the result.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	QueryObject.JoinSpec
class	QueryObject.SortSpec

Field Summary

Fields

Modifier and Type	Field and Description
protected Map<String,CmisSelector>	colOrFuncAlias
protected Map<Integer,CmisSelector>	columnReferences
protected String	from main from alias name
protected Map<String,String>	froms map from alias name to type query name
protected List<CmisSelector>	joinReferences
protected List<QueryObject.JoinSpec>	joinSpecs
protected List<String>	predefinedQueryNames
protected List<CmisSelector>	selectReferences
protected List<QueryObject.SortSpec>	sortSpecs
protected TypeManager	typeMgr
protected Map<Integer,String>	typeReferences
protected List<CmisSelector>	whereReferences

Constructor Summary

Constructors

Constructor and Description
QueryObject()
QueryObject(TypeManager tm)

Method Summary

Methods

Modifier and Type	Method and Description
void	addAlias(String aliasName, CmisSelector aliasRef)
void	addJoin(String kind, String alias, boolean hasSpec)
void	addJoinReference(org.antlr.runtime.tree.Tree node, CmisSelector reference)
void	addSelectReference(org.antlr.runtime.tree.Tree node, CmisSelector selRef)
void	addSortCriterium(org.antlr.runtime.tree.Tree node, ColumnReference colRef, boolean ascending)
String	addType(String aliasName, String typeQueryName)
void	addWhereReference(org.antlr.runtime.tree.Tree node, CmisSelector reference)
void	addWhereTypeReference(org.antlr.runtime.tree.Tree node, String qualifier)
CmisSelector	getColumnReference(Integer token)
Map<Integer,CmisSelector>	getColumnReferences()
String	getErrorMessage()
List<TypeDefinition>	getJoinedSecondaryTypes() Tests if the query has a JOIN from one primary type to only secondary types (This JOIN does not require a JOIN capability in CMIS).
List<CmisSelector>	getJoinReferences()
List<QueryObject.JoinSpec>	getJoins()
TypeDefinition	getMainFromName()
String	getMainTypeAlias()
List<QueryObject.SortSpec>	getOrderBys()
TypeDefinition	getParentType(String typeId)
TypeDefinition	getParentType(TypeDefinition td)
protected String	getReferencedTypeQueryName(String qualifier)
Map<String,String>	getRequestedFuncsByAlias() return a map of all functions that have been requested in the SELECT part of the statement.
Map<String,String>	getRequestedPropertiesByAlias() return a map of all columns that have been requested in the SELECT part of the statement.
CmisSelector	getSelectAlias(String aliasName)
List<CmisSelector>	getSelectReferences()
TypeDefinition	getTypeDefinitionFromQueryName(String queryName)
String	getTypeQueryName(String qualifier)
String	getTypeReference(Integer token)
Map<String,String>	getTypes()
List<CmisSelector>	getWhereReferences()
boolean	isPredfinedQueryName(String name)
protected void	resolveTypeForAlias(ColumnReference colRef)
protected void	resolveTypeForColumnReference(ColumnReference colRef)
boolean	resolveTypes()
protected void	validateColumnReferenceAndResolveType(ColumnReference colRef)
protected void	validateColumnReferenceAndResolveType(TypeDefinition td, ColumnReference colRef)

Methods inherited from class java.lang.Object

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

Field Detail

typeMgr

protected TypeManager typeMgr

selectReferences

protected final List<CmisSelector> selectReferences

whereReferences

protected final List<CmisSelector> whereReferences

joinReferences

protected final List<CmisSelector> joinReferences

colOrFuncAlias

protected final Map<String,CmisSelector> colOrFuncAlias

froms

protected final Map<String,String> froms

map from alias name to type query name

from

protected String from

main from alias name

joinSpecs

protected final List<QueryObject.JoinSpec> joinSpecs

columnReferences

protected final Map<Integer,CmisSelector> columnReferences

typeReferences

protected final Map<Integer,String> typeReferences

sortSpecs

protected final List<QueryObject.SortSpec> sortSpecs

predefinedQueryNames

protected List<String> predefinedQueryNames

Constructor Detail

QueryObject

public QueryObject()

QueryObject

public QueryObject(TypeManager tm)

Method Detail

getColumnReferences

public Map<Integer,CmisSelector> getColumnReferences()

getColumnReference

public CmisSelector getColumnReference(Integer token)

getTypeReference

public String getTypeReference(Integer token)

getErrorMessage

public String getErrorMessage()

getSelectReferences

public List<CmisSelector> getSelectReferences()

addSelectReference

public void addSelectReference(org.antlr.runtime.tree.Tree node,
                      CmisSelector selRef)

addAlias

public void addAlias(String aliasName,
            CmisSelector aliasRef)

getSelectAlias

public CmisSelector getSelectAlias(String aliasName)

addType

public String addType(String aliasName,
             String typeQueryName)

getMainTypeAlias

public String getMainTypeAlias()

getTypes

public Map<String,String> getTypes()

getTypeQueryName

public String getTypeQueryName(String qualifier)

getTypeDefinitionFromQueryName

public TypeDefinition getTypeDefinitionFromQueryName(String queryName)

getParentType

public TypeDefinition getParentType(TypeDefinition td)

getParentType

public TypeDefinition getParentType(String typeId)

getMainFromName

public TypeDefinition getMainFromName()

getRequestedPropertiesByAlias

public Map<String,String> getRequestedPropertiesByAlias()

return a map of all columns that have been requested in the SELECT part of the statement.

Returns:

a map with a String as a key and value. key is the alias if an alias was given or the query name otherwise. value is the query name of the property.

getRequestedFuncsByAlias

public Map<String,String> getRequestedFuncsByAlias()

return a map of all functions that have been requested in the SELECT part of the statement.

Returns:

a map with a String as a key and value. key is the alias if an alias was given or the function name otherwise, value is the a name of the property.

addJoinReference

public void addJoinReference(org.antlr.runtime.tree.Tree node,
                    CmisSelector reference)

getJoinReferences

public List<CmisSelector> getJoinReferences()

addJoin

public void addJoin(String kind,
           String alias,
           boolean hasSpec)

getJoins

public List<QueryObject.JoinSpec> getJoins()

addWhereReference

public void addWhereReference(org.antlr.runtime.tree.Tree node,
                     CmisSelector reference)

getWhereReferences

public List<CmisSelector> getWhereReferences()

addWhereTypeReference

public void addWhereTypeReference(org.antlr.runtime.tree.Tree node,
                         String qualifier)

getOrderBys

public List<QueryObject.SortSpec> getOrderBys()

addSortCriterium

public void addSortCriterium(org.antlr.runtime.tree.Tree node,
                    ColumnReference colRef,
                    boolean ascending)

getJoinedSecondaryTypes

public List<TypeDefinition> getJoinedSecondaryTypes()

Tests if the query has a JOIN from one primary type to only secondary types (This JOIN does not require a JOIN capability in CMIS).

Returns:

list of secondary type ids that are joined or null if the query has no JOINs or has joins to primary types

resolveTypes

public boolean resolveTypes()

resolveTypeForAlias

protected void resolveTypeForAlias(ColumnReference colRef)

resolveTypeForColumnReference

protected void resolveTypeForColumnReference(ColumnReference colRef)

isPredfinedQueryName

public boolean isPredfinedQueryName(String name)

validateColumnReferenceAndResolveType

protected void validateColumnReferenceAndResolveType(ColumnReference colRef)

validateColumnReferenceAndResolveType

protected void validateColumnReferenceAndResolveType(TypeDefinition td,
                                         ColumnReference colRef)

getReferencedTypeQueryName

protected String getReferencedTypeQueryName(String qualifier)