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package org.mule.transformer; |
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import org.mule.api.DefaultMuleException; |
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import org.mule.api.MuleContext; |
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import org.mule.api.MuleException; |
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import org.mule.api.endpoint.ImmutableEndpoint; |
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import org.mule.api.lifecycle.InitialisationException; |
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import org.mule.api.transformer.Transformer; |
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import org.mule.config.i18n.CoreMessages; |
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import org.mule.transformer.types.DataTypeFactory; |
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import org.mule.transport.service.TransportFactoryException; |
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import org.mule.transport.service.TransportServiceDescriptor; |
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import java.util.Iterator; |
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import java.util.LinkedList; |
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import java.util.List; |
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import java.util.StringTokenizer; |
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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|
32 | 0 | public class TransformerUtils |
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{ |
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public static final String COMMA = ","; |
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|
37 | 0 | private static Log logger = LogFactory.getLog(AbstractTransformer.class); |
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public static void initialiseAllTransformers(List<Transformer> transformers) throws InitialisationException |
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{ |
41 | 0 | if (transformers != null) |
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{ |
43 | 0 | Iterator<Transformer> transformer = transformers.iterator(); |
44 | 0 | while (transformer.hasNext()) |
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{ |
46 | 0 | (transformer.next()).initialise(); |
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} |
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} |
49 | 0 | } |
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public static String toString(List<Transformer> transformers) |
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{ |
53 | 0 | StringBuffer buffer = new StringBuffer(); |
54 | 0 | Iterator<Transformer> transformer = transformers.iterator(); |
55 | 0 | while (transformer.hasNext()) |
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{ |
57 | 0 | buffer.append(transformer.next().toString()); |
58 | 0 | if (transformer.hasNext()) |
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{ |
60 | 0 | buffer.append(" -> "); |
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} |
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} |
63 | 0 | return buffer.toString(); |
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} |
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public static Transformer firstOrNull(List<Transformer> transformers) |
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{ |
68 | 0 | if (transformers != null && 0 != transformers.size()) |
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{ |
70 | 0 | return transformers.get(0); |
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} |
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else |
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{ |
74 | 0 | return null; |
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} |
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} |
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public static boolean isSourceTypeSupportedByFirst(List<Transformer> transformers, Class clazz) |
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{ |
80 | 0 | Transformer transformer = firstOrNull(transformers); |
81 | 0 | return null != transformer && transformer.isSourceDataTypeSupported(new DataTypeFactory().create(clazz)); |
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} |
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|
84 | 0 | protected static interface TransformerSource |
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{ |
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public List<Transformer> getTransformers() throws TransportFactoryException; |
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} |
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protected static List<Transformer> getTransformersFromSource(TransformerSource source) |
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{ |
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try |
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{ |
93 | 0 | List<Transformer> transformers = source.getTransformers(); |
94 | 0 | TransformerUtils.initialiseAllTransformers(transformers); |
95 | 0 | return transformers; |
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} |
97 | 0 | catch (MuleException e) |
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{ |
99 | 0 | logger.debug(e.getMessage(), e); |
100 | 0 | return null; |
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} |
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} |
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public static List<Transformer> getDefaultInboundTransformers(final TransportServiceDescriptor serviceDescriptor, final ImmutableEndpoint endpoint) |
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{ |
106 | 0 | return getTransformersFromSource(new TransformerSource() |
107 | 0 | { |
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public List<Transformer> getTransformers() throws TransportFactoryException |
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{ |
110 | 0 | return serviceDescriptor.createInboundTransformers(endpoint); |
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} |
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}); |
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} |
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public static List<Transformer> getDefaultResponseTransformers(final TransportServiceDescriptor serviceDescriptor, final ImmutableEndpoint endpoint) |
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{ |
117 | 0 | return getTransformersFromSource(new TransformerSource() |
118 | 0 | { |
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public List<Transformer> getTransformers() throws TransportFactoryException |
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{ |
121 | 0 | return serviceDescriptor.createResponseTransformers(endpoint); |
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} |
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}); |
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} |
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|
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public static List<Transformer> getDefaultOutboundTransformers(final TransportServiceDescriptor serviceDescriptor, final ImmutableEndpoint endpoint) |
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{ |
128 | 0 | return getTransformersFromSource(new TransformerSource() |
129 | 0 | { |
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public List<Transformer> getTransformers() throws TransportFactoryException |
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{ |
132 | 0 | return serviceDescriptor.createOutboundTransformers(endpoint); |
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} |
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}); |
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} |
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public static List<Transformer> getTransformers(String names, MuleContext muleContext) throws DefaultMuleException |
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{ |
147 | 0 | if (null != names) |
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{ |
149 | 0 | List<Transformer> transformers = new LinkedList<Transformer>(); |
150 | 0 | StringTokenizer st = new StringTokenizer(names, COMMA); |
151 | 0 | while (st.hasMoreTokens()) |
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{ |
153 | 0 | String key = st.nextToken().trim(); |
154 | 0 | Transformer transformer = muleContext.getRegistry().lookupTransformer(key); |
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|
156 | 0 | if (transformer == null) |
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{ |
158 | 0 | throw new DefaultMuleException(CoreMessages.objectNotRegistered("Transformer", key)); |
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} |
160 | 0 | transformers.add(transformer); |
161 | 0 | } |
162 | 0 | return transformers; |
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} |
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else |
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{ |
166 | 0 | return null; |
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} |
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} |
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|
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} |