Package eu.clarin.sru.server.fcs.parser

Class Expression

  • public class Expression
extends QueryNode
    A FCS-QL expression tree SIMPLE expression node.

    • Method Detail

      • getLayerIdentifier

        public String getLayerIdentifier()
        Get the layer identifier.
        Returns:
        the layer identifier

      • hasLayerIdentifier

        public boolean hasLayerIdentifier​(String identifier)
        Check if the expression used a given Layer Type Identifier.
        Parameters:
        identifier - the Layer Type Identifier to check against
        Returns:
        true if this identifier was used, false otherwise

      • getLayerQualifier

        public String getLayerQualifier()
        Get the Layer Type Identifier qualifier.
        Returns:
        the Layer Type Identifier qualifier or null if none was used in this expression

      • isLayerQualifierEmpty

        public boolean isLayerQualifierEmpty()
        Check if the Layer Type Identifier qualifier is empty.
        Returns:
        true if no Layer Type Identifier qualifier was set, false otherwise

      • hasLayerQualifier

        public boolean hasLayerQualifier​(String qualifier)
        Check if the expression used a given qualifier for the Layer Type Identifier.
        Parameters:
        qualifier - the qualifier to check against
        Returns:
        true if this identifier was used, false otherwise

      • getOperator

        public Operator getOperator()
        Get the operator.
        Returns:
        the operator

      • hasOperator

        public boolean hasOperator​(Operator operator)
        Check if expression used a given operator.
        Parameters:
        operator - the operator to check
        Returns:
        true if the given operator was used, false otherwise

      • getRegexValue

        public String getRegexValue()
        Get the regex value.
        Returns:
        the regex value

      • getRegexFlags

        public Set<RegexFlag> getRegexFlags()
        Get the regex flags set.
        Returns:
        the regex flags set or null if no flags were used in this expression

      • isRegexFlagsEmpty

        public boolean isRegexFlagsEmpty()
        Check if a regex flag set is empty.
        Returns:
        true if no regex flags where set, false otherwise

      • hasRegexFlag

        public boolean hasRegexFlag​(RegexFlag flag)
        Check if a regex flag is set.
        Parameters:
        flag - the flag to be checked
        Returns:
        true if the flag is set, false otherwise