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16 package org.apache.cocoon.forms.datatype.validationruleimpl;
17
18 import org.apache.cocoon.forms.FormsConstants;
19 import org.apache.cocoon.forms.formmodel.CannotYetResolveWarning;
20 import org.apache.cocoon.forms.util.I18nMessage;
21 import org.apache.cocoon.forms.validation.ValidationError;
22 import org.outerj.expression.ExpressionContext;
23 import org.outerj.expression.Expression;
24
25 import java.math.BigDecimal  ;
26
27
40 public class LengthValidationRule extends AbstractValidationRule {
41 private Expression exactExpr;
42 private Expression minExpr;
43 private Expression maxExpr;
44
45 public void setExactExpr(Expression exactExpr) {
46 this.exactExpr = exactExpr;
47 }
48
49 public void setMinExpr(Expression minExpr) {
50 this.minExpr = minExpr;
51 }
52
53 public void setMaxExpr(Expression maxExpr) {
54 this.maxExpr = maxExpr;
55 }
56
57 public ValidationError validate(Object value, ExpressionContext expressionContext) {
58 String string = (String )value;
59
60 if (exactExpr != null) {
61 Object result = evaluateNumeric(exactExpr, expressionContext, "exact", "length");
62 if (result instanceof ValidationError) {
63 return (ValidationError)result;
64 } else if (result instanceof CannotYetResolveWarning) {
65 return null;
66 }
67 int length = ((BigDecimal )result).intValue();
68 if (string.length() != length) {
69 return hasFailMessage() ? getFailMessage() : new ValidationError(new I18nMessage("validation.string.exact-length", new String [] {String.valueOf(length)}, FormsConstants.I18N_CATALOGUE));
70 }
71 return null;
72 } else if (minExpr != null && maxExpr != null) {
73 Object result = evaluateNumeric(minExpr, expressionContext, "min", "length");
74 if (result instanceof ValidationError) {
75 return (ValidationError)result;
76 } else if (result instanceof CannotYetResolveWarning) {
77 return null;
78 }
79 int minLength = ((BigDecimal )result).intValue();
80
81 result = evaluateNumeric(maxExpr, expressionContext, "max", "length");
82 if (result instanceof ValidationError) {
83 return (ValidationError)result;
84 } else if (result instanceof CannotYetResolveWarning) {
85 return null;
86 }
87 int maxLength = ((BigDecimal )result).intValue();
88
89 if (string.length() < minLength || string.length() > maxLength) {
90 return hasFailMessage() ? getFailMessage() : new ValidationError(new I18nMessage("validation.string.range-length", new String [] {String.valueOf(minLength), String.valueOf(maxLength)}, FormsConstants.I18N_CATALOGUE));
91 }
92 return null;
93 } else if (minExpr != null) {
94 Object result = evaluateNumeric(minExpr, expressionContext, "min", "length");
95 if (result instanceof ValidationError) {
96 return (ValidationError)result;
97 } else if (result instanceof CannotYetResolveWarning) {
98 return null;
99 }
100 int length = ((BigDecimal )result).intValue();
101 if (string.length() < length) {
102 return hasFailMessage() ? getFailMessage() : new ValidationError(new I18nMessage("validation.string.min-length", new String [] {String.valueOf(length)}, FormsConstants.I18N_CATALOGUE));
103 }
104 return null;
105 } else if (maxExpr != null) {
106 Object result = evaluateNumeric(maxExpr, expressionContext, "max", "length");
107 if (result instanceof ValidationError) {
108 return (ValidationError)result;
109 } else if (result instanceof CannotYetResolveWarning) {
110 return null;
111 }
112 int length = ((BigDecimal )result).intValue();
113 if (string.length() > length) {
114 return hasFailMessage() ? getFailMessage() : new ValidationError(new I18nMessage("validation.string.max-length", new String [] {String.valueOf(length)}, FormsConstants.I18N_CATALOGUE));
115 }
116 return null;
117 }
118 return null;
119 }
120
121 public boolean supportsType(Class clazz, boolean arrayType) {
122 return clazz.isAssignableFrom(String .class) && !arrayType;
123 }
124 }
125 |
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