Class JDOQLCompiler

java.lang.Object
org.datanucleus.store.query.compiler.JavaQueryCompiler
org.datanucleus.store.query.compiler.JDOQLCompiler
All Implemented Interfaces:
SymbolResolver

public class JDOQLCompiler extends JavaQueryCompiler
Implementation of a compiler for JDOQL (JSR0012, JSR0243).
  • Field Details

    • allowAll

      boolean allowAll
  • Constructor Details

  • Method Details

    • setAllowAll

      public void setAllowAll(boolean allow)
      Mutator for whether we should allow all JDOQL syntax (as opposed to strict JDOQL from the spec).
      Parameters:
      allow - Whether to allow
    • compile

      public QueryCompilation compile(Map parameters, Map<String,Object> subqueryMap)
      Method to compile the query, and return the compiled results.
      Specified by:
      compile in class JavaQueryCompiler
      Parameters:
      parameters - the parameter map of values keyed by param name
      subqueryMap - Map of subquery variables, keyed by the subquery name
      Returns:
      The compiled query
    • compileUpdate

      public Expression[] compileUpdate()
      Overrides:
      compileUpdate in class JavaQueryCompiler
    • containsOnlyGroupingOrAggregates

      private static boolean containsOnlyGroupingOrAggregates(Expression expr, Expression[] exprGrouping)
      Convenience method to check the provided expression for whether it contains only grouping expressions or aggregates
      Parameters:
      expr - The expression to check
      exprGrouping - The grouping expressions
      Returns:
      Whether it contains only grouping or aggregates
    • isMethodNameAggregate

      private static boolean isMethodNameAggregate(String methodName)
    • isExpressionGroupingOrAggregate

      private static boolean isExpressionGroupingOrAggregate(Expression expr, Expression[] exprGrouping)
      Convenience method to check of the provided expression is either an aggregate expression or is a grouping expression (or literal, parameter, or variable).
      Parameters:
      expr - The expression to check
      exprGrouping - The grouping expressions
      Returns:
      Whether it passes the test
    • 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
    • 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
    • getLanguage

      public String getLanguage()
      Accessor for the query language name.
      Specified by:
      getLanguage in class JavaQueryCompiler
      Returns:
      Name of the query language.
    • 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 class JavaQueryCompiler
      Parameters:
      name - The name
      Returns:
      Whether it is a keyword