Class JPQLCompiler
- java.lang.Object
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- org.datanucleus.store.query.compiler.JavaQueryCompiler
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- org.datanucleus.store.query.compiler.JPQLCompiler
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- All Implemented Interfaces:
SymbolResolver
public class JPQLCompiler extends JavaQueryCompiler
Implementation of a compiler for JPQL (JSR0220, JSR0317).
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Field Summary
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Fields inherited from class org.datanucleus.store.query.compiler.JavaQueryCompiler
candidateAlias, candidateAliasOrig, candidateClass, candidates, caseSensitiveAliases, clr, filter, from, grouping, having, imports, JOIN_INNER, JOIN_INNER_FETCH, JOIN_OUTER, JOIN_OUTER_FETCH, JOIN_OUTER_FETCH_RIGHT, JOIN_OUTER_RIGHT, metaDataManager, options, ordering, parameters, parameterSubstitutionNumber, parameterSubtitutionMap, parentCompiler, parser, queryMgr, result, symtbl, update, variables
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Constructor Summary
Constructors Constructor Description JPQLCompiler(PersistenceNucleusContext nucCtx, ClassLoaderResolver clr, String from, Class candidateClass, Collection candidates, String filter, Imports imports, String ordering, String result, String grouping, String having, String params, String update)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
caseSensitiveSymbolNames()
Whether names of symbols are case-sensitive (e.g JDOQL returns true, but JPQL returns false).QueryCompilation
compile(Map parameters, Map subqueryMap)
Method to compile the query, and return the compiled results.String
getLanguage()
Accessor for the query language name.protected boolean
isKeyword(String name)
Method to return if the supplied name is a keyword.Class
resolveClass(String className)
Method to perform a lookup of the class name from the input name.boolean
supportsImplicitVariables()
Whether we should accept implicit variables in the query.-
Methods inherited from class org.datanucleus.store.query.compiler.JavaQueryCompiler
compileCandidatesParametersVariables, compileFilter, compileFrom, compileGrouping, compileHaving, compileOrdering, compileResult, compileUpdate, getPrimaryClass, getType, setLinkToParentQuery, setOption, swapCandidateAliasNodeName, swapSubqueryParameters
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Constructor Detail
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JPQLCompiler
public JPQLCompiler(PersistenceNucleusContext nucCtx, ClassLoaderResolver clr, String from, Class candidateClass, Collection candidates, String filter, Imports imports, String ordering, String result, String grouping, String having, String params, String update)
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Method Detail
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compile
public QueryCompilation compile(Map parameters, Map subqueryMap)
Method to compile the query, and return the compiled results.- Specified by:
compile
in classJavaQueryCompiler
- Parameters:
parameters
- the parameter map of values keyed by param namesubqueryMap
- Map of subquery variables, keyed by the subquery name- Returns:
- The compiled query
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resolveClass
public Class resolveClass(String className)
Method to perform a lookup of the class name from the input name. Makes use of the query "imports" and the lookup to "entity name".- Specified by:
resolveClass
in interfaceSymbolResolver
- Overrides:
resolveClass
in classJavaQueryCompiler
- Parameters:
className
- Name of the class- Returns:
- The class corresponding to this name
- Throws:
ClassNotResolvedException
- thrown if not resolvable using imports or entity name
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supportsImplicitVariables
public boolean supportsImplicitVariables()
Description copied from interface:SymbolResolver
Whether we should accept implicit variables in the query. JDOQL supports variables, yet JPQL doesn't. Also in JDOQL if the user supplies some explicit variables then it doesn't allow implicit variables.- Returns:
- Whether to support implicit variables
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caseSensitiveSymbolNames
public boolean caseSensitiveSymbolNames()
Description copied from interface:SymbolResolver
Whether names of symbols are case-sensitive (e.g JDOQL returns true, but JPQL returns false).- Returns:
- Whether case sensitive
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getLanguage
public String getLanguage()
Accessor for the query language name.- Specified by:
getLanguage
in classJavaQueryCompiler
- Returns:
- Name of the query language.
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isKeyword
protected boolean isKeyword(String name)
Method to return if the supplied name is a keyword. Keywords can only appear at particular places in a query so we need to detect for valid queries.- Specified by:
isKeyword
in classJavaQueryCompiler
- Parameters:
name
- The name- Returns:
- Whether it is a keyword
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