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4 changes: 2 additions & 2 deletions
4
src/main/java/edu/utdallas/tiny_db/server/b_query_engine/common/catalog/MetadataMgr.java
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136 changes: 68 additions & 68 deletions
136
src/main/java/edu/utdallas/tiny_db/server/b_query_engine/common/catalog/index/IndexMgr.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,87 +1,87 @@ | ||
| package edu.utdallas.tiny_db.server.b_query_engine.common.catalog.index; | ||
|
|
||
| import edu.utdallas.tiny_db.server.b_query_engine.impl.basic.b_stats_manager.StatMgr; | ||
| import edu.utdallas.tiny_db.server.b_query_engine.impl.basic.b_stats_manager.domain.StatInfo; | ||
| import edu.utdallas.tiny_db.server.b_query_engine.common.catalog.stats.StatMgr; | ||
| import edu.utdallas.tiny_db.server.b_query_engine.common.catalog.stats.domain.StatInfo; | ||
| import edu.utdallas.tiny_db.server.b_query_engine.common.catalog.table.TableDefinition; | ||
| import edu.utdallas.tiny_db.server.b_query_engine.common.catalog.table.TableMgr; | ||
| import edu.utdallas.tiny_db.server.b_query_engine.common.catalog.table.TablePhysicalLayout; | ||
| import edu.utdallas.tiny_db.server.d_storage_engine.common.transaction.Transaction; | ||
| import edu.utdallas.tiny_db.server.d_storage_engine.impl.data.heap.HeapRWRecordScan; | ||
| import edu.utdallas.tiny_db.server.b_query_engine.common.catalog.table.TablePhysicalLayout; | ||
| import edu.utdallas.tiny_db.server.b_query_engine.common.catalog.table.TableDefinition; | ||
|
|
||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
|
|
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| /** | ||
| * The index manager. | ||
| * The index manager has similar functionality to the table manager. | ||
| * The index manager. The index manager has similar functionality to the table manager. | ||
| * | ||
| * @author Edward Sciore | ||
| */ | ||
| public class IndexMgr { | ||
| private TablePhysicalLayout recordValueLayout; | ||
| private TableMgr tblmgr; | ||
| private StatMgr statmgr; | ||
|
|
||
| /** | ||
| * Create the index manager. | ||
| * This constructor is called during system startup. | ||
| * If the database is new, then the <i>idxcat</i> table is created. | ||
| * | ||
| * @param isnew indicates whether this is a new database | ||
| * @param tx the system startup transaction | ||
| */ | ||
| public IndexMgr(boolean isnew, TableMgr tblmgr, StatMgr statmgr, Transaction tx) { | ||
| if (isnew) { | ||
| TableDefinition sch = new TableDefinition(); | ||
| sch.addStringField("indexname", TableMgr.MAX_NAME); | ||
| sch.addStringField("tablename", TableMgr.MAX_NAME); | ||
| sch.addStringField("fieldname", TableMgr.MAX_NAME); | ||
| tblmgr.createTable("idxcat", sch, tx); | ||
| } | ||
| this.tblmgr = tblmgr; | ||
| this.statmgr = statmgr; | ||
| recordValueLayout = tblmgr.getLayout("idxcat", tx); | ||
| } | ||
| private TablePhysicalLayout recordValueLayout; | ||
| private TableMgr tblmgr; | ||
| private StatMgr statmgr; | ||
|
|
||
| /** | ||
| * Create the index manager. This constructor is called during system startup. If the database is | ||
| * new, then the <i>idxcat</i> table is created. | ||
| * | ||
| * @param isnew indicates whether this is a new database | ||
| * @param tx the system startup transaction | ||
| */ | ||
| public IndexMgr(boolean isnew, TableMgr tblmgr, StatMgr statmgr, Transaction tx) { | ||
| if (isnew) { | ||
| TableDefinition sch = new TableDefinition(); | ||
| sch.addStringField("indexname", TableMgr.MAX_NAME); | ||
| sch.addStringField("tablename", TableMgr.MAX_NAME); | ||
| sch.addStringField("fieldname", TableMgr.MAX_NAME); | ||
|
|
||
| /** | ||
| * Create an index of the specified type for the specified field. | ||
| * A unique ID is assigned to this index, and its information | ||
| * is stored in the idxcat table. | ||
| * | ||
| * @param idxname the name of the index | ||
| * @param tblname the name of the indexed table | ||
| * @param fldname the name of the indexed field | ||
| * @param tx the calling transaction | ||
| */ | ||
| public void createIndex(String idxname, String tblname, String fldname, Transaction tx) { | ||
| HeapRWRecordScan ts = new HeapRWRecordScan(tx, "idxcat", recordValueLayout); | ||
| ts.seekToInsertStart(); | ||
| ts.setString("indexname", idxname); | ||
| ts.setString("tablename", tblname); | ||
| ts.setString("fieldname", fldname); | ||
| ts.close(); | ||
| tblmgr.createTable("idxcat", sch, tx); | ||
| } | ||
| this.tblmgr = tblmgr; | ||
| this.statmgr = statmgr; | ||
| recordValueLayout = tblmgr.getLayout("idxcat", tx); | ||
| } | ||
|
|
||
| /** | ||
| * Create an index of the specified type for the specified field. A unique ID is assigned to this | ||
| * index, and its information is stored in the idxcat table. | ||
| * | ||
| * @param idxname the name of the index | ||
| * @param tblname the name of the indexed table | ||
| * @param fldname the name of the indexed field | ||
| * @param tx the calling transaction | ||
| */ | ||
| public void createIndex(String idxname, String tblname, String fldname, Transaction tx) { | ||
| HeapRWRecordScan ts = new HeapRWRecordScan(tx, "idxcat", recordValueLayout); | ||
| ts.seekToInsertStart(); | ||
| ts.setString("indexname", idxname); | ||
| ts.setString("tablename", tblname); | ||
| ts.setString("fieldname", fldname); | ||
| ts.close(); | ||
| } | ||
|
|
||
| /** | ||
| * Return a map containing the index info for all indexes on the specified table. | ||
| * | ||
| * @param tblname the name of the table | ||
| * @param tx the calling transaction | ||
| * @return a map of IndexInfo objects, keyed by their field names | ||
| */ | ||
| public Map<String, IndexInfo> getIndexInfo(String tblname, Transaction tx) { | ||
| Map<String, IndexInfo> result = new HashMap<String, IndexInfo>(); | ||
| HeapRWRecordScan ts = new HeapRWRecordScan(tx, "idxcat", recordValueLayout); | ||
| while (ts.next()) { | ||
| if (ts.getString("tablename").equals(tblname)) { | ||
| String idxname = ts.getString("indexname"); | ||
| String fldname = ts.getString("fieldname"); | ||
| TablePhysicalLayout tblRecordValueLayout = tblmgr.getLayout(tblname, tx); | ||
| StatInfo tblsi = statmgr.getStatInfo(tblname, tblRecordValueLayout, tx); | ||
|
|
||
| /** | ||
| * Return a map containing the index info for all indexes | ||
| * on the specified table. | ||
| * | ||
| * @param tblname the name of the table | ||
| * @param tx the calling transaction | ||
| * @return a map of IndexInfo objects, keyed by their field names | ||
| */ | ||
| public Map<String, IndexInfo> getIndexInfo(String tblname, Transaction tx) { | ||
| Map<String, IndexInfo> result = new HashMap<String, IndexInfo>(); | ||
| HeapRWRecordScan ts = new HeapRWRecordScan(tx, "idxcat", recordValueLayout); | ||
| while (ts.next()) if (ts.getString("tablename").equals(tblname)) { | ||
| String idxname = ts.getString("indexname"); | ||
| String fldname = ts.getString("fieldname"); | ||
| TablePhysicalLayout tblRecordValueLayout = tblmgr.getLayout(tblname, tx); | ||
| StatInfo tblsi = statmgr.getStatInfo(tblname, tblRecordValueLayout, tx); | ||
| IndexInfo ii = new IndexInfo(idxname, fldname, tblRecordValueLayout.schema(), tx, tblsi); | ||
| result.put(fldname, ii); | ||
| } | ||
| ts.close(); | ||
| return result; | ||
| IndexInfo ii = new IndexInfo(idxname, fldname, tblRecordValueLayout.schema(), tx, tblsi); | ||
| result.put(fldname, ii); | ||
| } | ||
| } | ||
| ts.close(); | ||
| return result; | ||
| } | ||
| } |
4 changes: 2 additions & 2 deletions
4
...e/impl/basic/b_stats_manager/StatMgr.java → ..._engine/common/catalog/stats/StatMgr.java
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2 changes: 1 addition & 1 deletion
2
...asic/b_stats_manager/domain/StatInfo.java → ...common/catalog/stats/domain/StatInfo.java
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