1 |
|
|
2 |
|
|
3 |
|
|
4 |
|
|
5 |
|
|
6 |
|
|
7 |
|
|
8 |
|
|
9 |
|
|
10 |
|
|
11 |
|
|
12 |
|
|
13 |
|
|
14 |
|
|
15 |
|
|
16 |
|
|
17 |
|
package org.apache.camel.builder; |
18 |
|
|
19 |
|
import java.util.regex.Matcher; |
20 |
|
import java.util.regex.Pattern; |
21 |
|
|
22 |
|
import org.apache.camel.Exchange; |
23 |
|
import org.apache.camel.Expression; |
24 |
|
import org.apache.camel.Predicate; |
25 |
|
import org.apache.camel.impl.BinaryPredicateSupport; |
26 |
|
import org.apache.camel.impl.PredicateSupport; |
27 |
|
import org.apache.camel.util.ObjectHelper; |
28 |
|
|
29 |
|
import static org.apache.camel.util.ObjectHelper.compare; |
30 |
|
import static org.apache.camel.util.ObjectHelper.notNull; |
31 |
|
|
32 |
|
|
33 |
|
|
34 |
|
|
35 |
|
|
36 |
|
|
37 |
|
public class PredicateBuilder { |
38 |
|
|
39 |
|
|
40 |
|
|
41 |
|
|
42 |
0 |
private PredicateBuilder() { |
43 |
0 |
} |
44 |
|
|
45 |
|
|
46 |
|
|
47 |
|
|
48 |
|
public static <E extends Exchange> Predicate<E> toPredicate(final Expression<E> expression) { |
49 |
9 |
return new PredicateSupport<E>() { |
50 |
|
public boolean matches(E exchange) { |
51 |
15 |
Object value = expression.evaluate(exchange); |
52 |
15 |
return evaluateValuePredicate(value); |
53 |
|
} |
54 |
|
|
55 |
|
@Override |
56 |
24 |
public String toString() { |
57 |
18 |
return expression.toString(); |
58 |
|
} |
59 |
|
}; |
60 |
|
} |
61 |
|
|
62 |
|
|
63 |
|
|
64 |
|
|
65 |
|
|
66 |
|
public static boolean evaluateValuePredicate(Object value) { |
67 |
15 |
if (value instanceof Boolean) { |
68 |
0 |
Boolean aBoolean = (Boolean)value; |
69 |
0 |
return aBoolean.booleanValue(); |
70 |
|
} |
71 |
15 |
return value != null; |
72 |
|
} |
73 |
|
|
74 |
|
|
75 |
|
|
76 |
|
|
77 |
|
public static <E extends Exchange> Predicate<E> not(final Predicate<E> predicate) { |
78 |
12 |
notNull(predicate, "predicate"); |
79 |
12 |
return new PredicateSupport<E>() { |
80 |
|
public boolean matches(E exchange) { |
81 |
12 |
return !predicate.matches(exchange); |
82 |
|
} |
83 |
|
|
84 |
|
@Override |
85 |
24 |
public String toString() { |
86 |
0 |
return "not " + predicate; |
87 |
|
} |
88 |
|
}; |
89 |
|
} |
90 |
|
|
91 |
|
|
92 |
|
|
93 |
|
|
94 |
|
public static <E extends Exchange> Predicate<E> and(final Predicate<E> left, final Predicate<E> right) { |
95 |
0 |
notNull(left, "left"); |
96 |
0 |
notNull(right, "right"); |
97 |
0 |
return new PredicateSupport<E>() { |
98 |
|
public boolean matches(E exchange) { |
99 |
0 |
return left.matches(exchange) && right.matches(exchange); |
100 |
|
} |
101 |
|
|
102 |
|
@Override |
103 |
0 |
public String toString() { |
104 |
0 |
return "(" + left + ") and (" + right + ")"; |
105 |
|
} |
106 |
|
}; |
107 |
|
} |
108 |
|
|
109 |
|
|
110 |
|
|
111 |
|
|
112 |
|
public static <E extends Exchange> Predicate<E> or(final Predicate<E> left, final Predicate<E> right) { |
113 |
0 |
notNull(left, "left"); |
114 |
0 |
notNull(right, "right"); |
115 |
0 |
return new PredicateSupport<E>() { |
116 |
|
public boolean matches(E exchange) { |
117 |
0 |
return left.matches(exchange) || right.matches(exchange); |
118 |
|
} |
119 |
|
|
120 |
|
@Override |
121 |
0 |
public String toString() { |
122 |
0 |
return "(" + left + ") or (" + right + ")"; |
123 |
|
} |
124 |
|
}; |
125 |
|
} |
126 |
|
|
127 |
|
public static <E extends Exchange> Predicate<E> isEqualTo(final Expression<E> left, |
128 |
|
final Expression<E> right) { |
129 |
87 |
return new BinaryPredicateSupport<E>(left, right) { |
130 |
|
|
131 |
|
protected boolean matches(E exchange, Object leftValue, Object rightValue) { |
132 |
84 |
return ObjectHelper.equals(leftValue, rightValue); |
133 |
|
} |
134 |
|
|
135 |
87 |
protected String getOperationText() { |
136 |
90 |
return "=="; |
137 |
|
} |
138 |
|
}; |
139 |
|
} |
140 |
|
|
141 |
|
public static <E extends Exchange> Predicate<E> isNotEqualTo(final Expression<E> left, |
142 |
|
final Expression<E> right) { |
143 |
0 |
return new BinaryPredicateSupport<E>(left, right) { |
144 |
|
|
145 |
|
protected boolean matches(E exchange, Object leftValue, Object rightValue) { |
146 |
0 |
return !ObjectHelper.equals(leftValue, rightValue); |
147 |
|
} |
148 |
|
|
149 |
0 |
protected String getOperationText() { |
150 |
0 |
return "=="; |
151 |
|
} |
152 |
|
}; |
153 |
|
} |
154 |
|
|
155 |
|
public static <E extends Exchange> Predicate<E> isLessThan(final Expression<E> left, |
156 |
|
final Expression<E> right) { |
157 |
0 |
return new BinaryPredicateSupport<E>(left, right) { |
158 |
|
|
159 |
|
protected boolean matches(E exchange, Object leftValue, Object rightValue) { |
160 |
0 |
return compare(leftValue, rightValue) < 0; |
161 |
|
} |
162 |
|
|
163 |
0 |
protected String getOperationText() { |
164 |
0 |
return "<"; |
165 |
|
} |
166 |
|
}; |
167 |
|
} |
168 |
|
|
169 |
|
public static <E extends Exchange> Predicate<E> isLessThanOrEqualTo(final Expression<E> left, |
170 |
|
final Expression<E> right) { |
171 |
0 |
return new BinaryPredicateSupport<E>(left, right) { |
172 |
|
|
173 |
|
protected boolean matches(E exchange, Object leftValue, Object rightValue) { |
174 |
0 |
return compare(leftValue, rightValue) <= 0; |
175 |
|
} |
176 |
|
|
177 |
0 |
protected String getOperationText() { |
178 |
0 |
return "<="; |
179 |
|
} |
180 |
|
}; |
181 |
|
} |
182 |
|
|
183 |
|
public static <E extends Exchange> Predicate<E> isGreaterThan(final Expression<E> left, |
184 |
|
final Expression<E> right) { |
185 |
6 |
return new BinaryPredicateSupport<E>(left, right) { |
186 |
|
|
187 |
|
protected boolean matches(E exchange, Object leftValue, Object rightValue) { |
188 |
6 |
return compare(leftValue, rightValue) > 0; |
189 |
|
} |
190 |
|
|
191 |
6 |
protected String getOperationText() { |
192 |
18 |
return ">"; |
193 |
|
} |
194 |
|
}; |
195 |
|
} |
196 |
|
|
197 |
|
public static <E extends Exchange> Predicate<E> isGreaterThanOrEqualTo(final Expression<E> left, |
198 |
|
final Expression<E> right) { |
199 |
0 |
return new BinaryPredicateSupport<E>(left, right) { |
200 |
|
|
201 |
|
protected boolean matches(E exchange, Object leftValue, Object rightValue) { |
202 |
0 |
return compare(leftValue, rightValue) < 0; |
203 |
|
} |
204 |
|
|
205 |
0 |
protected String getOperationText() { |
206 |
0 |
return ">="; |
207 |
|
} |
208 |
|
}; |
209 |
|
} |
210 |
|
|
211 |
|
public static <E extends Exchange> Predicate<E> contains(final Expression<E> left, |
212 |
|
final Expression<E> right) { |
213 |
6 |
return new BinaryPredicateSupport<E>(left, right) { |
214 |
|
|
215 |
|
protected boolean matches(E exchange, Object leftValue, Object rightValue) { |
216 |
9 |
return ObjectHelper.contains(leftValue, rightValue); |
217 |
|
} |
218 |
|
|
219 |
6 |
protected String getOperationText() { |
220 |
12 |
return "contains"; |
221 |
|
} |
222 |
|
}; |
223 |
|
} |
224 |
|
|
225 |
|
public static <E extends Exchange> Predicate<E> isNull(final Expression<E> expression) { |
226 |
0 |
return isEqualTo(expression, ExpressionBuilder.<E> constantExpression(null)); |
227 |
|
} |
228 |
|
|
229 |
|
public static <E extends Exchange> Predicate<E> isNotNull(final Expression<E> expression) { |
230 |
0 |
return isNotEqualTo(expression, ExpressionBuilder.<E> constantExpression(null)); |
231 |
|
} |
232 |
|
|
233 |
|
public static <E extends Exchange> Predicate<E> isInstanceOf(final Expression<E> expression, |
234 |
|
final Class type) { |
235 |
3 |
notNull(expression, "expression"); |
236 |
3 |
notNull(type, "type"); |
237 |
|
|
238 |
3 |
return new PredicateSupport<E>() { |
239 |
|
public boolean matches(E exchange) { |
240 |
0 |
Object value = expression.evaluate(exchange); |
241 |
0 |
return type.isInstance(value); |
242 |
|
} |
243 |
|
|
244 |
|
@Override |
245 |
|
public String toString() { |
246 |
9 |
return expression + " instanceof " + type.getName(); |
247 |
|
} |
248 |
|
|
249 |
|
@Override |
250 |
3 |
protected String assertionFailureMessage(E exchange) { |
251 |
0 |
return super.assertionFailureMessage(exchange) + " for <" + expression.evaluate(exchange) |
252 |
|
+ ">"; |
253 |
|
} |
254 |
|
}; |
255 |
|
} |
256 |
|
|
257 |
|
|
258 |
|
|
259 |
|
|
260 |
|
|
261 |
|
|
262 |
|
|
263 |
|
|
264 |
|
|
265 |
|
public static <E extends Exchange> Predicate<E> regex(final Expression<E> expression, final String regex) { |
266 |
6 |
return regex(expression, Pattern.compile(regex)); |
267 |
|
} |
268 |
|
|
269 |
|
|
270 |
|
|
271 |
|
|
272 |
|
|
273 |
|
|
274 |
|
|
275 |
|
|
276 |
|
|
277 |
|
public static <E extends Exchange> Predicate<E> regex(final Expression<E> expression, |
278 |
|
final Pattern pattern) { |
279 |
6 |
notNull(expression, "expression"); |
280 |
6 |
notNull(pattern, "pattern"); |
281 |
|
|
282 |
6 |
return new PredicateSupport<E>() { |
283 |
|
public boolean matches(E exchange) { |
284 |
12 |
Object value = expression.evaluate(exchange); |
285 |
12 |
if (value != null) { |
286 |
12 |
Matcher matcher = pattern.matcher(value.toString()); |
287 |
12 |
return matcher.matches(); |
288 |
|
} |
289 |
0 |
return false; |
290 |
|
} |
291 |
|
|
292 |
|
@Override |
293 |
|
public String toString() { |
294 |
15 |
return expression + ".matches(" + pattern + ")"; |
295 |
|
} |
296 |
|
|
297 |
|
@Override |
298 |
18 |
protected String assertionFailureMessage(E exchange) { |
299 |
3 |
return super.assertionFailureMessage(exchange) + " for <" + expression.evaluate(exchange) |
300 |
|
+ ">"; |
301 |
|
} |
302 |
|
|
303 |
|
}; |
304 |
|
} |
305 |
|
} |