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package org.apache.camel.impl; |
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import org.apache.camel.CamelContext; |
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import org.apache.camel.NoSuchLanguageException; |
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import org.apache.camel.spi.Language; |
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import org.apache.camel.spi.LanguageResolver; |
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import org.apache.camel.util.FactoryFinder; |
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import org.apache.camel.util.NoFactoryAvailableException; |
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public class DefaultLanguageResolver implements LanguageResolver { |
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protected static final FactoryFinder LANGUAGE_FACTORY = new FactoryFinder("META-INF/services/org/apache/camel/language/"); |
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protected static final FactoryFinder LANGUAGE_RESOLVER = new FactoryFinder("META-INF/services/org/apache/camel/language/resolver/"); |
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public Language resolveLanguage(String name, CamelContext context) { |
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Class type = null; |
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try { |
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type = LANGUAGE_FACTORY.findClass(name); |
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} catch (NoFactoryAvailableException e) { |
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} catch (Throwable e) { |
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throw new IllegalArgumentException("Invalid URI, no Language registered for scheme : " + name, e); |
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} |
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if (type != null) { |
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if (Language.class.isAssignableFrom(type)) { |
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return (Language)context.getInjector().newInstance(type); |
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} else { |
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throw new IllegalArgumentException("Type is not a Language implementation. Found: " + type.getName()); |
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} |
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} |
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return noSpecificLanguageFound(name, context); |
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} |
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protected Language noSpecificLanguageFound(String name, CamelContext context) { |
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Class type = null; |
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try { |
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type = LANGUAGE_RESOLVER.findClass("default"); |
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} catch (NoFactoryAvailableException e) { |
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} catch (Throwable e) { |
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throw new IllegalArgumentException("Invalid URI, no Language registered for scheme : " + name, e); |
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} |
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if (type != null) { |
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if (LanguageResolver.class.isAssignableFrom(type)) { |
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LanguageResolver resolver = (LanguageResolver)context.getInjector().newInstance(type); |
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return resolver.resolveLanguage(name, context); |
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} else { |
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throw new IllegalArgumentException("Type is not a LanguageResolver implementation. Found: " + type.getName()); |
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} |
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} |
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throw new NoSuchLanguageException(name); |
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} |
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} |