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package org.kuali.student.contract.model.validation; |
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import org.kuali.student.contract.model.Constraint; |
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import java.util.ArrayList; |
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import java.util.Collection; |
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import java.util.List; |
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public class ConstraintValidator implements ModelValidator |
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{ |
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private Constraint cons; |
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public ConstraintValidator (Constraint cons) |
34 | 0 | { |
35 | 0 | this.cons = cons; |
36 | 0 | } |
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private Collection errors; |
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@Override |
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public Collection<String> validate () |
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{ |
43 | 0 | this.errors = new ArrayList (); |
44 | 0 | validateMinMaxLength (); |
45 | 0 | validateMinMaxOccurs (); |
46 | 0 | validateMinMaxValue (); |
47 | 0 | return this.errors; |
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} |
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private void validateMinMaxLength () |
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{ |
52 | 0 | if ( ! cons.getMinLength ().equals ("")) |
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{ |
54 | 0 | int min = parseIntError (cons.getMinLength (), "minLength"); |
55 | 0 | if (min < 0) |
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{ |
57 | 0 | this.addError ("minLength is less than zero"); |
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} |
59 | 0 | if ( ! cons.getMaxLength ().equals ("")) |
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{ |
61 | 0 | int max = parseIntError (cons.getMaxLength (), "maxLength"); |
62 | 0 | if (min < 0) |
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{ |
64 | 0 | this.addError ("maxLength is less than zero"); |
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} |
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67 | 0 | if (min > max) |
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{ |
69 | 0 | addError ("minLength exceeds the maxLength"); |
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} |
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} |
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} |
73 | 0 | } |
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private void validateMinMaxOccurs () |
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{ |
77 | 0 | if ( ! cons.getMinOccurs ().equals ("")) |
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{ |
79 | 0 | int min = parseIntError (cons.getMinOccurs (), "minOccurs"); |
80 | 0 | if (min < 0) |
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{ |
82 | 0 | this.addError ("minOccurs is less than zero"); |
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} |
84 | 0 | if ( ! cons.getMaxOccurs ().equals ("")) |
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{ |
86 | 0 | int max = parseIntError (cons.getMaxOccurs (), "maxOccurs"); |
87 | 0 | if (max < 0) |
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{ |
89 | 0 | this.addError ("maxOccurs is less than zero"); |
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} |
91 | 0 | if (min > max) |
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{ |
93 | 0 | addError ("minOccurs exceeds the maxOccurs"); |
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} |
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} |
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} |
97 | 0 | } |
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private void validateMinMaxValue () |
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{ |
101 | 0 | if ( ! cons.getMinValue ().equals ("")) |
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{ |
103 | 0 | int min = parseIntError (cons.getMinValue (), "minValue"); |
104 | 0 | if (min < 0) |
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{ |
106 | 0 | this.addError ("minValue is less than zero"); |
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} |
108 | 0 | if ( ! cons.getMaxValue ().equals ("")) |
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{ |
110 | 0 | int max = parseIntError (cons.getMaxValue (), "maxValue"); |
111 | 0 | if (max < 0) |
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{ |
113 | 0 | this.addError ("maxOccurs is less than zero"); |
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} |
115 | 0 | if (min > max) |
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{ |
117 | 0 | addError ("minOccurs exceeds the maxOccurs"); |
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} |
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} |
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} |
121 | 0 | } |
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private int parseIntError (String value, String field) |
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{ |
125 | 0 | if (value.equals ("")) |
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{ |
127 | 0 | return 0; |
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} |
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try |
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{ |
131 | 0 | int val = Integer.parseInt (value); |
132 | 0 | return val; |
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} |
134 | 0 | catch (NumberFormatException ex) |
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{ |
136 | 0 | addError (field + " is [" + value + "] not an integer"); |
137 | 0 | return 0; |
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} |
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} |
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private void addError (String msg) |
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{ |
143 | 0 | String id = cons.getId (); |
144 | 0 | if (id.equals ("")) |
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{ |
146 | 0 | id = cons.getKey (); |
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} |
148 | 0 | String error = "Error in constraint " + id + ": " + msg; |
149 | 0 | if ( ! errors.contains (error)) |
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{ |
151 | 0 | errors.add (error); |
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} |
153 | 0 | } |
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} |