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package org.mule.expression; |
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import org.mule.api.expression.ExpressionManager; |
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import org.mule.config.i18n.CoreMessages; |
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import org.mule.util.StringUtils; |
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public class ExpressionConfig |
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{ |
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public static final String CUSTOM_EVALUATOR = "custom"; |
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public static final String EXPRESSION_SEPARATOR = ":"; |
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private String expression; |
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private String evaluator; |
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private String customEvaluator; |
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private String fullExpression; |
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30 | 0 | private String expressionPrefix = ExpressionManager.DEFAULT_EXPRESSION_PREFIX; |
31 | 0 | private String expressionPostfix = ExpressionManager.DEFAULT_EXPRESSION_POSTFIX; |
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public ExpressionConfig() |
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{ |
35 | 0 | super(); |
36 | 0 | } |
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public ExpressionConfig(String expression, String evaluator, String customEvaluator) |
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{ |
40 | 0 | this(expression, evaluator, customEvaluator, |
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ExpressionManager.DEFAULT_EXPRESSION_PREFIX, |
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ExpressionManager.DEFAULT_EXPRESSION_POSTFIX); |
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44 | 0 | } |
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public ExpressionConfig(String expression, String evaluator, String customEvaluator, String expressionPrefix, String expressionPostfix) |
47 | 0 | { |
48 | 0 | setCustomEvaluator(customEvaluator); |
49 | 0 | setEvaluator(evaluator); |
50 | 0 | setExpression(expression); |
51 | 0 | this.expressionPostfix = expressionPostfix; |
52 | 0 | this.expressionPrefix = expressionPrefix; |
53 | 0 | } |
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public void parse(String expressionString) |
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{ |
57 | 0 | if(expressionString.startsWith(expressionPrefix)) |
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{ |
59 | 0 | expressionString = expressionString.substring(expressionPrefix.length()); |
60 | 0 | expressionString = expressionString.substring(0, expressionString.length() - expressionPostfix.length()); |
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} |
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63 | 0 | int i = expressionString.indexOf(EXPRESSION_SEPARATOR); |
64 | 0 | if(i < 0) |
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{ |
66 | 0 | throw new IllegalArgumentException("Expression is invalid: " + expressionString); |
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} |
68 | 0 | this.evaluator = expressionString.substring(0, i); |
69 | 0 | this.expression = expressionString.substring(i+1); |
70 | 0 | } |
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public void validate(ExpressionManager manager) |
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{ |
74 | 0 | if (expression == null) |
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{ |
76 | 0 | throw new IllegalArgumentException(CoreMessages.objectIsNull("expression").getMessage()); |
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} |
78 | 0 | if (evaluator == null) |
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{ |
80 | 0 | throw new IllegalArgumentException(CoreMessages.objectIsNull("evaluator").getMessage()); |
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} |
82 | 0 | if (CUSTOM_EVALUATOR.equalsIgnoreCase(evaluator)) |
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{ |
84 | 0 | if (customEvaluator == null) |
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{ |
86 | 0 | throw new IllegalArgumentException(CoreMessages.objectIsNull("custom evaluator").getMessage()); |
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} |
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else |
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{ |
90 | 0 | evaluator = customEvaluator; |
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} |
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} |
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94 | 0 | if (!manager.isEvaluatorRegistered(evaluator)) |
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{ |
96 | 0 | throw new IllegalArgumentException(CoreMessages.expressionEvaluatorNotRegistered(evaluator).getMessage()); |
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} |
98 | 0 | } |
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public String getFullExpression(ExpressionManager manager) |
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{ |
102 | 0 | if (fullExpression == null) |
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{ |
104 | 0 | validate(manager); |
105 | 0 | fullExpression = expressionPrefix + evaluator + EXPRESSION_SEPARATOR + expression + expressionPostfix; |
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} |
107 | 0 | return fullExpression; |
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} |
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public String getCustomEvaluator() |
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{ |
112 | 0 | return customEvaluator; |
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} |
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public void setCustomEvaluator(String customEvaluator) |
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{ |
117 | 0 | this.customEvaluator = StringUtils.trimToNull(customEvaluator); |
118 | 0 | fullExpression=null; |
119 | 0 | } |
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public String getEvaluator() |
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{ |
123 | 0 | return evaluator; |
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} |
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public void setEvaluator(String evaluator) |
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{ |
128 | 0 | this.evaluator = StringUtils.trimToNull(evaluator); |
129 | 0 | fullExpression=null; |
130 | 0 | } |
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public String getExpression() |
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{ |
134 | 0 | return expression; |
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} |
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public void setExpression(String expression) |
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{ |
139 | 0 | this.expression = StringUtils.trimToEmpty(expression); |
140 | 0 | fullExpression=null; |
141 | 0 | } |
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} |