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!752 lib 1004017 // Berkeley DB import com.sleepycat.je.DatabaseException; import com.sleepycat.je.Environment; import com.sleepycat.je.EnvironmentConfig; import com.sleepycat.persist.EntityStore; import com.sleepycat.persist.StoreConfig; import com.sleepycat.persist.model.Entity; import com.sleepycat.persist.model.PrimaryKey; import com.sleepycat.persist.model.SecondaryKey; import static com.sleepycat.persist.model.Relationship.MANY_TO_ONE; import com.sleepycat.je.DatabaseException; import com.sleepycat.persist.EntityStore; import com.sleepycat.persist.PrimaryIndex; import com.sleepycat.persist.SecondaryIndex; public static class SimpleDA { // Open the indices public SimpleDA(EntityStore store) throws DatabaseException { // Primary key for ExampleEntity classes pIdx = store.getPrimaryIndex( String.class, ExampleEntity.class); // Secondary key for ExampleEntity classes // Last field in the getSecondaryIndex() method must be // the name of a class member; in this case, an // ExampleEntity.class data member. sIdx = store.getSecondaryIndex( pIdx, String.class, "aSecondaryKey"); } // Index Accessors PrimaryIndex<String,ExampleEntity> pIdx; SecondaryIndex<String,String,ExampleEntity> sIdx; } @Entity public static class ExampleEntity { // The primary key must be unique in the database. @PrimaryKey private String aPrimaryKey; @SecondaryKey(relate=MANY_TO_ONE) private String aSecondaryKey; void setPKey(S x) { aPrimaryKey = x; } void setSKey(S x) { aSecondaryKey = x; } } p { Environment myEnv; EntityStore store; bool readOnly = false; File envHome = mkdir(getProgramDir()); print("Opening Berkely DB in " + envHome.getAbsolutePath()); EnvironmentConfig myEnvConfig = new EnvironmentConfig(); StoreConfig storeConfig = new StoreConfig(); myEnvConfig.setAllowCreate(!readOnly); storeConfig.setAllowCreate(!readOnly); // Open the environment and entity store myEnv = new Environment(envHome, myEnvConfig); store = new EntityStore(myEnv, "EntityStore", storeConfig); print("Saving stuff"); SimpleDA da = new SimpleDA(store); ExampleEntity sec1 = new ExampleEntity(); sec1.setPKey("keyone"); sec1.setSKey("skeyone"); da.pIdx.put(sec1); print("Closing"); if (store != null) store.close(); if (myEnv != null) myEnv.close(); }
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Snippet ID: | #1004019 |
Snippet name: | Test Berkeley DB 2 (Storing) |
Eternal ID of this version: | #1004019/1 |
Text MD5: | e7a0bbb8a5696fd92f61a443558d0dc4 |
Transpilation MD5: | c837ed7b03f76ecb3543460a7df590f1 |
Author: | stefan |
Category: | javax / databases |
Type: | JavaX source code |
Public (visible to everyone): | Yes |
Archived (hidden from active list): | No |
Created/modified: | 2016-08-03 18:01:03 |
Source code size: | 2560 bytes / 92 lines |
Pitched / IR pitched: | No / No |
Views / Downloads: | 471 / 849 |
Referenced in: | #1004020 - Test Berkeley DB 3 (Retrieving) |