/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.translator.solr;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
import javax.resource.cci.ConnectionFactory;
import org.teiid.core.TeiidRuntimeException;
import org.teiid.core.types.DataTypeManager;
import org.teiid.core.types.TransformationException;
import org.teiid.language.Command;
import org.teiid.language.QueryExpression;
import org.teiid.metadata.RuntimeMetadata;
import org.teiid.translator.ExecutionContext;
import org.teiid.translator.ExecutionFactory;
import org.teiid.translator.MetadataProcessor;
import org.teiid.translator.ResultSetExecution;
import org.teiid.translator.SourceSystemFunctions;
import org.teiid.translator.Translator;
import org.teiid.translator.TranslatorException;
import org.teiid.translator.UpdateExecution;
import org.teiid.translator.jdbc.AliasModifier;
import org.teiid.translator.jdbc.FunctionModifier;
@Translator(name = "solr", description = "A translator for Solr search platform")
public class SolrExecutionFactory extends ExecutionFactory<ConnectionFactory, SolrConnection> {
protected Map<String, FunctionModifier> functionModifiers = new TreeMap<String, FunctionModifier>(String.CASE_INSENSITIVE_ORDER);
public SolrExecutionFactory() {
super();
setSourceRequiredForMetadata(true);
setTransactionSupport(TransactionSupport.NONE);
registerFunctionModifier("%", new AliasModifier("mod"));//$NON-NLS-1$ //$NON-NLS-2$
registerFunctionModifier("+", new AliasModifier("sum"));//$NON-NLS-1$ //$NON-NLS-2$
registerFunctionModifier("-", new AliasModifier("sub"));//$NON-NLS-1$ //$NON-NLS-2$
registerFunctionModifier("*", new AliasModifier("product"));//$NON-NLS-1$ //$NON-NLS-2$
registerFunctionModifier("/", new AliasModifier("div"));//$NON-NLS-1$ //$NON-NLS-2$
registerFunctionModifier(SourceSystemFunctions.POWER, new AliasModifier("pow"));//$NON-NLS-1$
}
@Override
public void start() throws TranslatorException {
super.start();
}
@Override
public MetadataProcessor<SolrConnection> getMetadataProcessor() {
return new SolrMetadataProcessor();
}
public void registerFunctionModifier(String name, FunctionModifier modifier) {
this.functionModifiers.put(name, modifier);
}
public Map<String, FunctionModifier> getFunctionModifiers() {
return this.functionModifiers;
}
@Override
public List<String> getSupportedFunctions() {
List<String> supportedFunctions = new ArrayList<String>();
supportedFunctions.addAll(getDefaultSupportedFunctions());
supportedFunctions.add(SourceSystemFunctions.MOD);
supportedFunctions.add(SourceSystemFunctions.POWER);
supportedFunctions.add(SourceSystemFunctions.ABS);
supportedFunctions.add(SourceSystemFunctions.LOG);
supportedFunctions.add(SourceSystemFunctions.SQRT);
return supportedFunctions;
}
public List<String> getDefaultSupportedFunctions(){
return Arrays.asList(new String[] { "+", "-", "*", "/", "%"}); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$
}
@Override
public ResultSetExecution createResultSetExecution(QueryExpression command,
ExecutionContext executionContext, RuntimeMetadata metadata,
SolrConnection connection) throws TranslatorException {
return new SolrQueryExecution(this, command, executionContext, metadata,connection);
}
@Override
public UpdateExecution createUpdateExecution(Command command, ExecutionContext executionContext, RuntimeMetadata metadata, SolrConnection connection) throws TranslatorException {
return new SolrUpdateExecution(this, command, executionContext, metadata, connection);
}
public Object convertFromSolrType(final Object value, final Class<?> expectedType) {
if (value == null) {
return null;
}
if (expectedType.isInstance(value)) {
return value;
}
try {
if (expectedType.isArray()) {
ArrayList multiValues = (ArrayList)value;
Object transformed = Array.newInstance(expectedType.getComponentType(), multiValues.size());
for (int i = 0; i < multiValues.size(); i++) {
Object obj = multiValues.get(i);
if (obj == null) {
Array.set(transformed, i, obj);
continue;
}
if (expectedType.getComponentType().isInstance(obj)) {
Array.set(transformed, i, obj);
continue;
}
if (DataTypeManager.isTransformable(obj.getClass(), expectedType.getComponentType())) {
Array.set(transformed, i, DataTypeManager.transformValue(obj, expectedType.getComponentType()));
}
else {
throw new TeiidRuntimeException(SolrPlugin.Event.TEIID20001, SolrPlugin.Util.gs(SolrPlugin.Event.TEIID20001, value, expectedType.getName()));
}
}
return transformed;
}
if (DataTypeManager.isTransformable(value.getClass(), expectedType)) {
return DataTypeManager.transformValue(value, expectedType);
}
throw new TeiidRuntimeException(SolrPlugin.Event.TEIID20001, SolrPlugin.Util.gs(SolrPlugin.Event.TEIID20001, value, expectedType.getName()));
} catch (TransformationException e) {
throw new TeiidRuntimeException(e);
}
}
@Override
public boolean supportsCompareCriteriaEquals() {
return true;
}
@Override
public boolean supportsInCriteria() {
return true;
}
@Override
public boolean supportsRowLimit() {
return true;
}
@Override
public boolean supportsNotCriteria() {
return true;
}
@Override
public boolean supportsLikeCriteria() {
return true;
}
@Override
public boolean supportsOrderBy() {
return true;
}
@Override
public boolean supportsCompareCriteriaOrdered(){
return true;
}
@Override
public boolean supportsOrCriteria(){
return true;
}
@Override
public boolean supportsOnlyLiteralComparison(){
return true;
}
@Override
public boolean supportsOrderByUnrelated(){
return true;
}
@Override
public boolean supportsSelectExpression() {
return true;
}
@Override
public boolean supportsBulkUpdate() {
return true;
}
@Override
public boolean supportsAggregatesCountStar() {
return true;
}
@Override
public boolean returnsSingleUpdateCount() {
return true;
}
}