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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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private Constraint cons; |
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32 | 0 | public ConstraintValidator(Constraint cons) { |
33 | 0 | this.cons = cons; |
34 | 0 | } |
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private Collection errors; |
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@Override |
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public Collection<String> validate() { |
39 | 0 | this.errors = new ArrayList(); |
40 | 0 | validateMinMaxLength(); |
41 | 0 | validateMinMaxOccurs(); |
42 | 0 | validateMinMaxValue(); |
43 | 0 | return this.errors; |
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} |
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private void validateMinMaxLength() { |
47 | 0 | if (!cons.getMinLength().equals("")) { |
48 | 0 | int min = parseIntError(cons.getMinLength(), "minLength"); |
49 | 0 | if (min < 0) { |
50 | 0 | this.addError("minLength is less than zero"); |
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} |
52 | 0 | if (!cons.getMaxLength().equals("")) { |
53 | 0 | int max = parseIntError(cons.getMaxLength(), "maxLength"); |
54 | 0 | if (min < 0) { |
55 | 0 | this.addError("maxLength is less than zero"); |
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} |
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58 | 0 | if (min > max) { |
59 | 0 | addError("minLength exceeds the maxLength"); |
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} |
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} |
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} |
63 | 0 | } |
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private void validateMinMaxOccurs() { |
66 | 0 | if (!cons.getMinOccurs().equals("")) { |
67 | 0 | int min = parseIntError(cons.getMinOccurs(), "minOccurs"); |
68 | 0 | if (min < 0) { |
69 | 0 | this.addError("minOccurs is less than zero"); |
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} |
71 | 0 | if (!cons.getMaxOccurs().equals("")) { |
72 | 0 | int max = parseIntError(cons.getMaxOccurs(), "maxOccurs"); |
73 | 0 | if (max < 0) { |
74 | 0 | this.addError("maxOccurs is less than zero"); |
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} |
76 | 0 | if (min > max) { |
77 | 0 | addError("minOccurs exceeds the maxOccurs"); |
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} |
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} |
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} |
81 | 0 | } |
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private void validateMinMaxValue() { |
84 | 0 | if (!cons.getMinValue().equals("")) { |
85 | 0 | int min = parseIntError(cons.getMinValue(), "minValue"); |
86 | 0 | if (min < 0) { |
87 | 0 | this.addError("minValue is less than zero"); |
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} |
89 | 0 | if (!cons.getMaxValue().equals("")) { |
90 | 0 | int max = parseIntError(cons.getMaxValue(), "maxValue"); |
91 | 0 | if (max < 0) { |
92 | 0 | this.addError("maxOccurs is less than zero"); |
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} |
94 | 0 | if (min > max) { |
95 | 0 | addError("minOccurs exceeds the maxOccurs"); |
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} |
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} |
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} |
99 | 0 | } |
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private int parseIntError(String value, String field) { |
102 | 0 | if (value.equals("")) { |
103 | 0 | return 0; |
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} |
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try { |
106 | 0 | int val = Integer.parseInt(value); |
107 | 0 | return val; |
108 | 0 | } catch (NumberFormatException ex) { |
109 | 0 | addError(field + " is [" + value + "] not an integer"); |
110 | 0 | return 0; |
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} |
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} |
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private void addError(String msg) { |
115 | 0 | String id = cons.getId(); |
116 | 0 | if (id.equals("")) { |
117 | 0 | id = cons.getKey(); |
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} |
119 | 0 | String error = "Error in constraint " + id + ": " + msg; |
120 | 0 | if (!errors.contains(error)) { |
121 | 0 | errors.add(error); |
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} |
123 | 0 | } |
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} |