Revision 10627 trunk/libraries/libGDBMS/src/main/java/com/hardcode/gdbms/engine/strategies/UnionDataSource.java
| UnionDataSource.java | ||
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package com.hardcode.gdbms.engine.strategies; |
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import com.hardcode.gdbms.driver.exceptions.ReadDriverException; |
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import com.hardcode.gdbms.engine.data.DataSource; |
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import com.hardcode.gdbms.engine.data.driver.DriverException; |
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import com.hardcode.gdbms.engine.data.persistence.Memento; |
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import com.hardcode.gdbms.engine.data.persistence.MementoException; |
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import com.hardcode.gdbms.engine.data.persistence.OperationLayerMemento; |
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/** |
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* @see com.hardcode.gdbms.engine.data.DataSource#open() |
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*/ |
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public void start() throws DriverException {
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public void start() throws ReadDriverException {
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dataSource1.start(); |
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try {
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dataSource2.start(); |
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} catch (DriverException e) {
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} catch (ReadDriverException e) {
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dataSource1.stop(); |
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throw e; |
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/** |
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* @see com.hardcode.gdbms.engine.data.DataSource#close() |
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*/ |
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public void stop() throws DriverException {
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public void stop() throws ReadDriverException {
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dataSource1.stop(); |
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dataSource2.stop(); |
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} |
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/** |
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* @see com.hardcode.gdbms.engine.data.FieldNameAccess#getFieldIndexByName(java.lang.String) |
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*/ |
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public int getFieldIndexByName(String fieldName) throws DriverException {
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public int getFieldIndexByName(String fieldName) throws ReadDriverException {
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return dataSource1.getFieldIndexByName(fieldName); |
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} |
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* int) |
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*/ |
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public Value getFieldValue(long rowIndex, int fieldId) |
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throws DriverException {
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throws ReadDriverException {
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long tamTabla1 = dataSource1.getRowCount(); |
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if (rowIndex < tamTabla1) {
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/** |
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* @see com.hardcode.gdbms.engine.data.driver.ReadAccess#getFieldCount() |
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*/ |
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public int getFieldCount() throws DriverException {
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public int getFieldCount() throws ReadDriverException {
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return dataSource1.getFieldCount(); |
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} |
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/** |
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* @see com.hardcode.gdbms.engine.data.driver.ReadAccess#getFieldName(int) |
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*/ |
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public String getFieldName(int fieldId) throws DriverException {
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public String getFieldName(int fieldId) throws ReadDriverException {
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return dataSource1.getFieldName(fieldId); |
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} |
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/** |
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* @see com.hardcode.gdbms.engine.data.driver.ReadAccess#getRowCount() |
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*/ |
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public long getRowCount() throws DriverException {
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public long getRowCount() throws ReadDriverException {
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return dataSource1.getRowCount() + dataSource2.getRowCount(); |
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} |
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/** |
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* @see com.hardcode.gdbms.engine.data.driver.ObjectDriver#getFieldType(int) |
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*/ |
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public int getFieldType(int i) throws DriverException {
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public int getFieldType(int i) throws ReadDriverException {
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return dataSource1.getFieldType(i); |
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} |
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new Memento[] { dataSource1.getMemento(), dataSource2.getMemento() }, getSQL());
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} |
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public int getFieldWidth(int i) throws DriverException {
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public int getFieldWidth(int i) throws ReadDriverException {
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return dataSource1.getFieldWidth(i); |
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} |
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} |
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