Package com.tangosol.coherence.dslquery

Class FilterBuilder

java.lang.Object
com.tangosol.coherence.dslquery.internal.AbstractCoherenceQueryWalker
com.tangosol.coherence.dslquery.FilterBuilder
All Implemented Interfaces:
TermWalker
public class FilterBuilder extends com.tangosol.coherence.dslquery.internal.AbstractCoherenceQueryWalker
FilterBuilder is a visitor class that converts a given Abstract Syntax Tree into a Filter. The Filter can be a deep nesting of Filters.
Author:
djl 2009.08.31, jk 2013.12.02

  • Field Details

    • m_term

      protected Term m_term
      The Term that is the AST that encodes the Filter to be made.

    • m_sCacheName

      protected String m_sCacheName
      The cache name this FilterBuilder is building Filters to query against.

      This is used by the language's ExtractorBuilder to map attribute names to POF indices. A null cache name results in the use of ReflectionExtractors.

    • f_listDefaultBindVars

      protected final List f_listDefaultBindVars
      The default indexed bind variables.

    • f_defaultNamedBindVars

      protected final ParameterResolver f_defaultNamedBindVars
      The default named bind variables.

  • Constructor Details

    • FilterBuilder

      public FilterBuilder()
      Construct a new FilterBuilder.

    • FilterBuilder

      public FilterBuilder(CoherenceQueryLanguage language)
      Construct a new FilterBuilder.
      Parameters:
      language - the CoherenceQueryLanguage instance to use

    • FilterBuilder

      public FilterBuilder(Object[] aoBindVars)
      Construct a new FilterBuilder with given binding environment.
      Parameters:
      aoBindVars - an Object array of indexed bind variables

    • FilterBuilder

      public FilterBuilder(Term term)
      Construct a new FilterBuilder that can construct a Filter from the given Term.
      Parameters:
      term - the Term to use in the construction of a filter

    • FilterBuilder

      public FilterBuilder(Object[] aoBindVars, Map mapNamedBindVars)
      Construct a new FilterBuilder with given binding environment.
      Parameters:
      aoBindVars - indexed bind variables
      mapNamedBindVars - named bind variables

    • FilterBuilder

      public FilterBuilder(List indexedBindVars, ParameterResolver namedBindVars, CoherenceQueryLanguage language)
      Construct a new FilterBuilder with given default bind variables.
      Parameters:
      indexedBindVars - the indexed bind variables
      namedBindVars - the named bind variables
      language - the CoherenceQueryLanguage instance to use

  • Method Details

    • makeFilter

      public Filter makeFilter()
      Make a new Filter from the set AST.
      Returns:
      the constructed Filter

    • makeFilter

      public Filter makeFilter(Term term)
      Make a new Filter from the given AST.
      Parameters:
      term - the AST to turn into a Filter
      Returns:
      the constructed Filter

    • makeFilter

      public Filter makeFilter(Term term, Object[] aoIndexedBindVars)
      Make a new Filter from the given AST using given array for Bind vars.
      Parameters:
      term - the AST to turn into a Filter
      aoIndexedBindVars - the array of Objects to use for Bind vars
      Returns:
      the constructed Filter

    • makeFilter

      public Filter makeFilter(Term term, Object[] aoIndexedBindVars, Map mapNamedBindVars)
      Make a new Filter from the given AST using the given bind variables.
      Parameters:
      term - the AST to turn into a Filter
      aoIndexedBindVars - the array of Objects to use for bind variables
      mapNamedBindVars - the named bind variables to use
      Returns:
      the constructed Filter

    • makeFilter

      public Filter makeFilter(Term term, List listBindVars, ParameterResolver namedBindVars)
      Make a new Filter from the given AST using the given bind variables.
      Parameters:
      term - the AST to turn into a Filter
      listBindVars - the indexed bind variables
      namedBindVars - the named bind variables
      Returns:
      the constructed Filter

    • makeFilterForCache

      public Filter makeFilterForCache(String sCacheName, Term term, List indexedBindVars, ParameterResolver namedBindVars)
      Make a new Filter from the given AST using given array for Bind vars.
      Parameters:
      sCacheName - the name of the cache the Filter is to query
      term - the AST to turn into a Filter
      indexedBindVars - the indexed bind variables to use
      namedBindVars - the named bind variables to use
      Returns:
      the constructed Filter

    • makeExtractor

      public ValueExtractor makeExtractor(NodeTerm term)
      Process the AST Tree using the given Term that represents getter.
      Parameters:
      term - the AST used
      Returns:
      the resulting ValueExtractor

    • acceptList

      protected void acceptList(NodeTerm termList)
      Description copied from class: com.tangosol.coherence.dslquery.internal.AbstractCoherenceQueryWalker
      The receiver has classified a list node.
      Overrides:
      acceptList in class com.tangosol.coherence.dslquery.internal.AbstractCoherenceQueryWalker
      Parameters:
      termList - the Term whose children represent the elements of the list

    • acceptIdentifier

      protected void acceptIdentifier(String sIdentifier)
      Description copied from class: com.tangosol.coherence.dslquery.internal.AbstractCoherenceQueryWalker
      The receiver has classified an identifier node.
      Overrides:
      acceptIdentifier in class com.tangosol.coherence.dslquery.internal.AbstractCoherenceQueryWalker
      Parameters:
      sIdentifier - the String representing the identifier

    • acceptBinaryOperator

      protected void acceptBinaryOperator(String sOperator, Term termLeft, Term termRight)
      This method will take a Binary Operator and the left and right Terms for the operator and result in the creation of a Filter or a ValueExtractor.
      Overrides:
      acceptBinaryOperator in class com.tangosol.coherence.dslquery.internal.AbstractCoherenceQueryWalker
      Parameters:
      sOperator - the string representing the operator
      termLeft - the left Term of the operation
      termRight - the right Term of the operation

    • acceptUnaryOperator

      protected void acceptUnaryOperator(String sOperator, Term t)
      Description copied from class: com.tangosol.coherence.dslquery.internal.AbstractCoherenceQueryWalker
      The receiver has classified a unary operation node.
      Overrides:
      acceptUnaryOperator in class com.tangosol.coherence.dslquery.internal.AbstractCoherenceQueryWalker
      Parameters:
      sOperator - the string representing the operator
      t - the Term being operated upon

    • acceptPath

      protected void acceptPath(NodeTerm term)
      Description copied from class: com.tangosol.coherence.dslquery.internal.AbstractCoherenceQueryWalker
      The receiver has classified a path node.
      Overrides:
      acceptPath in class com.tangosol.coherence.dslquery.internal.AbstractCoherenceQueryWalker
      Parameters:
      term - a Term whose children are the elements of the path

    • newParameterListFromMap

      protected static ParameterList newParameterListFromMap(Map<?,?> map)
      Convert the given Map into a ParameterList. The key of the map is used as the parameter name and the corresponding value as the parameter value.
      Parameters:
      map - the Map to convert to a ParameterList
      Returns:
      a ParameterList made up of the contents of the specified Map