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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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33 | 0 | private String expressionPrefix = ExpressionManager.DEFAULT_EXPRESSION_PREFIX; |
34 | 0 | private String expressionPostfix = ExpressionManager.DEFAULT_EXPRESSION_POSTFIX; |
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public ExpressionConfig() |
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{ |
38 | 0 | super(); |
39 | 0 | } |
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public ExpressionConfig(String expression, String evaluator, String customEvaluator) |
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{ |
43 | 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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47 | 0 | } |
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public ExpressionConfig(String expression, String evaluator, String customEvaluator, String expressionPrefix, String expressionPostfix) |
50 | 0 | { |
51 | 0 | setCustomEvaluator(customEvaluator); |
52 | 0 | setEvaluator(evaluator); |
53 | 0 | setExpression(expression); |
54 | 0 | this.expressionPostfix = expressionPostfix; |
55 | 0 | this.expressionPrefix = expressionPrefix; |
56 | 0 | } |
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public void parse(String expressionString) |
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{ |
60 | 0 | if(expressionString.startsWith(expressionPrefix)) |
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{ |
62 | 0 | expressionString = expressionString.substring(expressionPrefix.length()); |
63 | 0 | expressionString = expressionString.substring(0, expressionString.length() - expressionPostfix.length()); |
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} |
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66 | 0 | int i = expressionString.indexOf(EXPRESSION_SEPARATOR); |
67 | 0 | if(i < 0) |
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{ |
69 | 0 | throw new IllegalArgumentException("Expression is invalid: " + expressionString); |
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} |
71 | 0 | this.evaluator = expressionString.substring(0, i); |
72 | 0 | this.expression = expressionString.substring(i+1); |
73 | 0 | } |
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public void validate(ExpressionManager manager) |
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{ |
77 | 0 | if (expression == null) |
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{ |
79 | 0 | throw new IllegalArgumentException(CoreMessages.objectIsNull("expression").getMessage()); |
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} |
81 | 0 | if (evaluator == null) |
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{ |
83 | 0 | throw new IllegalArgumentException(CoreMessages.objectIsNull("evaluator").getMessage()); |
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} |
85 | 0 | if (CUSTOM_EVALUATOR.equalsIgnoreCase(evaluator)) |
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{ |
87 | 0 | if (customEvaluator == null) |
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{ |
89 | 0 | throw new IllegalArgumentException(CoreMessages.objectIsNull("custom evaluator").getMessage()); |
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} |
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else |
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{ |
93 | 0 | evaluator = customEvaluator; |
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} |
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} |
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97 | 0 | if (!manager.isEvaluatorRegistered(evaluator)) |
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{ |
99 | 0 | throw new IllegalArgumentException(CoreMessages.expressionEvaluatorNotRegistered(evaluator).getMessage()); |
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} |
101 | 0 | } |
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public String getFullExpression(ExpressionManager manager) |
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{ |
105 | 0 | if (fullExpression == null) |
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{ |
107 | 0 | validate(manager); |
108 | 0 | fullExpression = expressionPrefix + evaluator + EXPRESSION_SEPARATOR + expression + expressionPostfix; |
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} |
110 | 0 | return fullExpression; |
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} |
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public String getCustomEvaluator() |
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{ |
115 | 0 | return customEvaluator; |
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} |
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public void setCustomEvaluator(String customEvaluator) |
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{ |
120 | 0 | this.customEvaluator = StringUtils.trimToNull(customEvaluator); |
121 | 0 | fullExpression=null; |
122 | 0 | } |
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public String getEvaluator() |
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{ |
126 | 0 | return evaluator; |
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} |
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public void setEvaluator(String evaluator) |
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{ |
131 | 0 | this.evaluator = StringUtils.trimToNull(evaluator); |
132 | 0 | fullExpression=null; |
133 | 0 | } |
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public String getExpression() |
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{ |
137 | 0 | return expression; |
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} |
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public void setExpression(String expression) |
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{ |
142 | 0 | this.expression = StringUtils.trimToEmpty(expression); |
143 | 0 | fullExpression=null; |
144 | 0 | } |
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} |