Package dev.morphia.aggregation.expressions

Class TypeExpressions

  • public final class TypeExpressions
extends Object
    Defines helper methods for the type expressions
    Since:
    2.0

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      protected TypeExpressions()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static dev.morphia.aggregation.expressions.impls.Expression convert​(dev.morphia.aggregation.expressions.impls.Expression input, dev.morphia.aggregation.expressions.impls.ConvertType to)
      Converts a value to a specified type.
      static dev.morphia.aggregation.expressions.impls.Expression isNumber​(dev.morphia.aggregation.expressions.impls.Expression input)
      Checks if the specified expression resolves to one of the numeric BSON types.
      static dev.morphia.aggregation.expressions.impls.Expression toBool​(dev.morphia.aggregation.expressions.impls.Expression input)
      Converts value to a boolean.
      static dev.morphia.aggregation.expressions.impls.Expression toDate​(dev.morphia.aggregation.expressions.impls.Expression input)
      Converts value to a Date.
      static dev.morphia.aggregation.expressions.impls.Expression toDecimal​(dev.morphia.aggregation.expressions.impls.Expression input)
      Converts value to a Decimal128.
      static dev.morphia.aggregation.expressions.impls.Expression toDouble​(dev.morphia.aggregation.expressions.impls.Expression input)
      Converts value to a double.
      static dev.morphia.aggregation.expressions.impls.Expression toInt​(dev.morphia.aggregation.expressions.impls.Expression input)
      Converts value to an integer.
      static dev.morphia.aggregation.expressions.impls.Expression toLong​(dev.morphia.aggregation.expressions.impls.Expression input)
      Converts value to a long.
      static dev.morphia.aggregation.expressions.impls.Expression toObjectId​(dev.morphia.aggregation.expressions.impls.Expression input)
      Converts value to an ObjectId.
      static dev.morphia.aggregation.expressions.impls.Expression toString​(dev.morphia.aggregation.expressions.impls.Expression input)
      Converts value to a string.
      static dev.morphia.aggregation.expressions.impls.Expression type​(dev.morphia.aggregation.expressions.impls.Expression input)
      Return the BSON data type of the field.

    • Constructor Detail

      • TypeExpressions

        protected TypeExpressions()

    • Method Detail

      • convert

        public static dev.morphia.aggregation.expressions.impls.Expression convert​(dev.morphia.aggregation.expressions.impls.Expression input,
                                                                           dev.morphia.aggregation.expressions.impls.ConvertType to)
        Converts a value to a specified type.
        Parameters:
        input - the value to process
        to - an expression giving the target type
        Returns:
        the new expression
        MongoDB documentation
        Aggregration Expression: $convert

      • isNumber

        public static dev.morphia.aggregation.expressions.impls.Expression isNumber​(dev.morphia.aggregation.expressions.impls.Expression input)
        Checks if the specified expression resolves to one of the numeric BSON types.
        Parameters:
        input - the value to check
        Returns:
        the new expression
        Since:
        2.1
        MongoDB documentation
        Aggregration Expression: $isNumber

      • toBool

        public static dev.morphia.aggregation.expressions.impls.Expression toBool​(dev.morphia.aggregation.expressions.impls.Expression input)
        Converts value to a boolean.
        Parameters:
        input - the value to process
        Returns:
        the new expression
        MongoDB documentation
        Aggregration Expression: $toBool

      • toDate

        public static dev.morphia.aggregation.expressions.impls.Expression toDate​(dev.morphia.aggregation.expressions.impls.Expression input)
        Converts value to a Date.
        Parameters:
        input - the value to process
        Returns:
        the new expression
        MongoDB documentation
        Aggregration Expression: $toDate

      • toDecimal

        public static dev.morphia.aggregation.expressions.impls.Expression toDecimal​(dev.morphia.aggregation.expressions.impls.Expression input)
        Converts value to a Decimal128.
        Parameters:
        input - the value to process
        Returns:
        the new expression
        MongoDB documentation
        Aggregration Expression: $toDecimal

      • toDouble

        public static dev.morphia.aggregation.expressions.impls.Expression toDouble​(dev.morphia.aggregation.expressions.impls.Expression input)
        Converts value to a double.
        Parameters:
        input - the value to process
        Returns:
        the new expression
        MongoDB documentation
        Aggregration Expression: $toDouble

      • toInt

        public static dev.morphia.aggregation.expressions.impls.Expression toInt​(dev.morphia.aggregation.expressions.impls.Expression input)
        Converts value to an integer.
        Parameters:
        input - the value to process
        Returns:
        the new expression
        MongoDB documentation
        Aggregration Expression: $toInt

      • toLong

        public static dev.morphia.aggregation.expressions.impls.Expression toLong​(dev.morphia.aggregation.expressions.impls.Expression input)
        Converts value to a long.
        Parameters:
        input - the value to process
        Returns:
        the new expression
        MongoDB documentation
        Aggregration Expression: $toLong

      • toObjectId

        public static dev.morphia.aggregation.expressions.impls.Expression toObjectId​(dev.morphia.aggregation.expressions.impls.Expression input)
        Converts value to an ObjectId.
        Parameters:
        input - the value to process
        Returns:
        the new expression
        MongoDB documentation
        Aggregration Expression: $toObjectId

      • toString

        public static dev.morphia.aggregation.expressions.impls.Expression toString​(dev.morphia.aggregation.expressions.impls.Expression input)
        Converts value to a string.
        Parameters:
        input - the value to process
        Returns:
        the new expression
        MongoDB documentation
        Aggregration Expression: $toString

      • type

        public static dev.morphia.aggregation.expressions.impls.Expression type​(dev.morphia.aggregation.expressions.impls.Expression input)
        Return the BSON data type of the field.
        Parameters:
        input - the value to process
        Returns:
        the new expression
        MongoDB documentation
        Aggregration Expression: $type