github.com/willyham/dosa@v2.3.1-0.20171024181418-1e446d37ee71+incompatible/remove_range.go (about)

     1  // Copyright (c) 2017 Uber Technologies, Inc.
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package dosa
    22  
    23  // RemoveRangeOp is used to specify contraints on RemoveRange calls
    24  type RemoveRangeOp struct {
    25  	conditioner
    26  }
    27  
    28  // NewRemoveRangeOp returns a new RangeOp instance
    29  func NewRemoveRangeOp(object DomainObject) *RemoveRangeOp {
    30  	rop := &RemoveRangeOp{
    31  		conditioner: conditioner{
    32  			object:     object,
    33  			conditions: map[string][]*Condition{},
    34  		},
    35  	}
    36  	return rop
    37  }
    38  
    39  // Eq is used to express an equality constraint for a remove range operation
    40  func (r *RemoveRangeOp) Eq(fieldName string, value interface{}) *RemoveRangeOp {
    41  	r.appendOp(Eq, fieldName, value)
    42  	return r
    43  }
    44  
    45  // Gt is used to express an "greater than" constraint for a remove range operation
    46  func (r *RemoveRangeOp) Gt(fieldName string, value interface{}) *RemoveRangeOp {
    47  	r.appendOp(Gt, fieldName, value)
    48  	return r
    49  }
    50  
    51  // GtOrEq is used to express an "greater than or equal" constraint for a
    52  // remove range operation
    53  func (r *RemoveRangeOp) GtOrEq(fieldName string, value interface{}) *RemoveRangeOp {
    54  	r.appendOp(GtOrEq, fieldName, value)
    55  	return r
    56  }
    57  
    58  // Lt is used to express a "less than" constraint for a remove range operation
    59  func (r *RemoveRangeOp) Lt(fieldName string, value interface{}) *RemoveRangeOp {
    60  	r.appendOp(Lt, fieldName, value)
    61  	return r
    62  }
    63  
    64  // LtOrEq is used to express a "less than or equal" constraint for a
    65  // remove range operation
    66  func (r *RemoveRangeOp) LtOrEq(fieldName string, value interface{}) *RemoveRangeOp {
    67  	r.appendOp(LtOrEq, fieldName, value)
    68  	return r
    69  }