| 1 | package com.hammurapi.extract.scripting; |
| 2 | |
| 3 | import javax.script.ScriptEngineFactory; |
| 4 | import javax.script.ScriptEngineManager; |
| 5 | |
| 6 | import com.hammurapi.extract.Extractor; |
| 7 | import com.hammurapi.extract.ExtractorFactory; |
| 8 | import com.hammurapi.extract.Predicate; |
| 9 | |
| 10 | public class ScriptingExtractorFactory implements ExtractorFactory { |
| 11 | |
| 12 | public <T, V, C> Extractor<T, V, C> createExtractor( |
| 13 | String language, |
| 14 | String code, |
| 15 | String[] parameterNames, |
| 16 | Class<T>[] parameterTypes, |
| 17 | Class<V> valueType, |
| 18 | Class<C> contextType, |
| 19 | ClassLoader classLoader) { |
| 20 | |
| 21 | ScriptEngineManager sem = new ScriptEngineManager(classLoader==null ? contextType.getClassLoader() : classLoader); |
| 22 | for (ScriptEngineFactory sef: sem.getEngineFactories()) { |
| 23 | if (sef.getLanguageName().equals(language)) { |
| 24 | ScriptingExtractor<T, V, C> scriptingExtractor = new ScriptingExtractor<T, V, C>(code, sef, parameterNames); |
| 25 | return scriptingExtractor; |
| 26 | } |
| 27 | } |
| 28 | |
| 29 | // Trying engine names |
| 30 | for (ScriptEngineFactory sef: sem.getEngineFactories()) { |
| 31 | for (String en: sef.getNames()) { |
| 32 | if (en.equals(language)) { |
| 33 | ScriptingExtractor<T, V, C> scriptingExtractor = new ScriptingExtractor<T, V, C>(code, sef, parameterNames); |
| 34 | return scriptingExtractor; |
| 35 | } |
| 36 | } |
| 37 | } |
| 38 | |
| 39 | return null; |
| 40 | } |
| 41 | |
| 42 | public <T, C> Predicate<T, C> createPredicate( |
| 43 | String language, |
| 44 | String code, |
| 45 | String[] parameterNames, |
| 46 | Class<T>[] parameterTypes, |
| 47 | Class<C> contextType, |
| 48 | ClassLoader classLoader) { |
| 49 | |
| 50 | ScriptEngineManager sem = new ScriptEngineManager(classLoader==null ? contextType.getClassLoader() : classLoader); |
| 51 | for (ScriptEngineFactory sef: sem.getEngineFactories()) { |
| 52 | if (sef.getLanguageName().equals(language)) { |
| 53 | ScriptingPredicate<T, C> scriptingPredicate = new ScriptingPredicate<T, C>(code, sef, parameterNames); |
| 54 | return scriptingPredicate; |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | // Trying engine names |
| 59 | for (ScriptEngineFactory sef: sem.getEngineFactories()) { |
| 60 | for (String en: sef.getNames()) { |
| 61 | if (en.equals(language)) { |
| 62 | ScriptingPredicate<T, C> scriptingPredicate = new ScriptingPredicate<T, C>(code, sef, parameterNames); |
| 63 | return scriptingPredicate; |
| 64 | } |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | return null; |
| 69 | } |
| 70 | |
| 71 | |
| 72 | } |