/*
* 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.odata;
import static org.teiid.language.SQLConstants.Reserved.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.TimeZone;
import java.util.TreeMap;
import javax.resource.cci.ConnectionFactory;
import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.joda.time.LocalDateTime;
import org.joda.time.LocalTime;
import org.odata4j.core.OCollection;
import org.odata4j.core.OSimpleObject;
import org.odata4j.core.UnsignedByte;
import org.odata4j.internal.InternalUtil;
import org.teiid.core.types.DataTypeManager;
import org.teiid.core.util.PropertiesUtils;
import org.teiid.core.util.StringUtil;
import org.teiid.language.Call;
import org.teiid.language.Command;
import org.teiid.language.Literal;
import org.teiid.language.QueryExpression;
import org.teiid.language.SQLConstants.Tokens;
import org.teiid.language.visitor.SQLStringVisitor;
import org.teiid.metadata.MetadataFactory;
import org.teiid.metadata.RuntimeMetadata;
import org.teiid.translator.*;
import org.teiid.translator.jdbc.AliasModifier;
import org.teiid.translator.jdbc.FunctionModifier;
/**
* TODO:
* Type comparison isof(T), isof(x, T) Whether targeted instance can be converted to the specified type.
* media streams are generally not supported yet. (blobs, clobs)
*/
@Translator(name="odata", description="A translator for making OData data service calls")
public class ODataExecutionFactory extends ExecutionFactory<ConnectionFactory, WSConnection> {
public final static TimeZone DEFAULT_TIME_ZONE = TimeZone.getDefault();
static final String INVOKE_HTTP = "invokeHttp"; //$NON-NLS-1$
protected Map<String, FunctionModifier> functionModifiers = new TreeMap<String, FunctionModifier>(String.CASE_INSENSITIVE_ORDER);
private String databaseTimeZone;
private TimeZone timeZone = DEFAULT_TIME_ZONE;
private boolean supportsOdataFilter;
private boolean supportsOdataOrderBy;
private boolean supportsOdataCount;
private boolean supportsOdataSkip;
private boolean supportsOdataTop;
private boolean supportsOdataBooleanFunctionsWithComparison;
public ODataExecutionFactory() {
setSourceRequiredForMetadata(true);
setSupportsOrderBy(true);
setSupportsOdataCount(true);
setSupportsOdataFilter(true);
setSupportsOdataOrderBy(true);
setSupportsOdataSkip(true);
setSupportsOdataTop(true);
setSupportsOdataBooleanFunctionsWithComparison(true);
setTransactionSupport(TransactionSupport.NONE);
registerFunctionModifier(SourceSystemFunctions.CONVERT, new AliasModifier("cast")); //$NON-NLS-1$
registerFunctionModifier(SourceSystemFunctions.LOCATE, new AliasModifier("indexof")); //$NON-NLS-1$
registerFunctionModifier(SourceSystemFunctions.LCASE, new AliasModifier("tolower")); //$NON-NLS-1$
registerFunctionModifier(SourceSystemFunctions.UCASE, new AliasModifier("toupper")); //$NON-NLS-1$
registerFunctionModifier(SourceSystemFunctions.DAYOFMONTH, new AliasModifier("day")); //$NON-NLS-1$
addPushDownFunction("odata", "startswith", TypeFacility.RUNTIME_NAMES.BOOLEAN, TypeFacility.RUNTIME_NAMES.STRING, TypeFacility.RUNTIME_NAMES.STRING); //$NON-NLS-1$ //$NON-NLS-2$
addPushDownFunction("odata", "substringof", TypeFacility.RUNTIME_NAMES.BOOLEAN, TypeFacility.RUNTIME_NAMES.STRING, TypeFacility.RUNTIME_NAMES.STRING); //$NON-NLS-1$ //$NON-NLS-2$
}
@Override
public void start() throws TranslatorException {
super.start();
if(this.databaseTimeZone != null && this.databaseTimeZone.trim().length() > 0) {
TimeZone tz = TimeZone.getTimeZone(this.databaseTimeZone);
if(!DEFAULT_TIME_ZONE.hasSameRules(tz)) {
this.timeZone = tz;;
}
}
}
@TranslatorProperty(display="Database time zone", description="Time zone of the database, if different than Integration Server", advanced=true)
public String getDatabaseTimeZone() {
return this.databaseTimeZone;
}
public void setDatabaseTimeZone(String databaseTimeZone) {
this.databaseTimeZone = databaseTimeZone;
}
@Override
public void getMetadata(MetadataFactory metadataFactory, WSConnection conn) throws TranslatorException {
ODataMetadataProcessor metadataProcessor = (ODataMetadataProcessor)getMetadataProcessor();
PropertiesUtils.setBeanProperties(metadataProcessor, metadataFactory.getModelProperties(), "importer"); //$NON-NLS-1$
metadataProcessor.setExecutionfactory(this);
metadataProcessor.process(metadataFactory, conn);
}
@Override
public MetadataProcessor<WSConnection> getMetadataProcessor() {
return new ODataMetadataProcessor();
}
@Override
public ResultSetExecution createResultSetExecution(QueryExpression command, ExecutionContext executionContext, RuntimeMetadata metadata, WSConnection connection) throws TranslatorException {
return new ODataQueryExecution(this, command, executionContext, metadata, connection);
}
@Override
public ProcedureExecution createProcedureExecution(Call command, ExecutionContext executionContext, RuntimeMetadata metadata, WSConnection connection) throws TranslatorException {
String nativeQuery = command.getMetadataObject().getProperty(SQLStringVisitor.TEIID_NATIVE_QUERY, false);
if (nativeQuery != null) {
throw new TranslatorException(ODataPlugin.Util.gs(ODataPlugin.Event.TEIID17014));
}
return new ODataProcedureExecution(command, this, executionContext, metadata, connection);
}
@Override
public UpdateExecution createUpdateExecution(Command command, ExecutionContext executionContext, RuntimeMetadata metadata, WSConnection connection) throws TranslatorException {
return new ODataUpdateExecution(command, this, executionContext, metadata, connection);
}
@Override
public List<String> getSupportedFunctions() {
List<String> supportedFunctions = new ArrayList<String>();
supportedFunctions.addAll(getDefaultSupportedFunctions());
// String functions
supportedFunctions.add(SourceSystemFunctions.ENDSWITH);
supportedFunctions.add(SourceSystemFunctions.REPLACE);
supportedFunctions.add(SourceSystemFunctions.TRIM);
supportedFunctions.add(SourceSystemFunctions.SUBSTRING);
supportedFunctions.add(SourceSystemFunctions.CONCAT);
supportedFunctions.add(SourceSystemFunctions.LENGTH);
// date functions
supportedFunctions.add(SourceSystemFunctions.YEAR);
supportedFunctions.add(SourceSystemFunctions.MONTH);
supportedFunctions.add(SourceSystemFunctions.HOUR);
supportedFunctions.add(SourceSystemFunctions.MINUTE);
supportedFunctions.add(SourceSystemFunctions.SECOND);
// airthamatic functions
supportedFunctions.add(SourceSystemFunctions.ROUND);
supportedFunctions.add(SourceSystemFunctions.FLOOR);
supportedFunctions.add(SourceSystemFunctions.CEILING);
return supportedFunctions;
}
/**
* Return a map of function name to FunctionModifier.
* @return Map of function name to FunctionModifier.
*/
public Map<String, FunctionModifier> getFunctionModifiers() {
return this.functionModifiers;
}
/**
* Add the {@link FunctionModifier} to the set of known modifiers.
* @param name
* @param modifier
*/
public void registerFunctionModifier(String name, FunctionModifier modifier) {
this.functionModifiers.put(name, modifier);
}
public List<String> getDefaultSupportedFunctions(){
return Arrays.asList(new String[] { "+", "-", "*", "/" }); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
}
@TranslatorProperty(display="Supports $Filter", description="True, $filter is supported", advanced=true)
public boolean supportsOdataFilter() {
return supportsOdataFilter;
}
public void setSupportsOdataFilter(boolean supports) {
this.supportsOdataFilter = supports;
}
@TranslatorProperty(display="Supports $OrderBy", description="True, $orderby is supported", advanced=true)
public boolean supportsOdataOrderBy() {
return supportsOdataOrderBy;
}
public void setSupportsOdataOrderBy(boolean supports) {
this.supportsOdataOrderBy = supports;
}
@TranslatorProperty(display="Supports $count", description="True, $count is supported", advanced=true)
public boolean supportsOdataCount() {
return supportsOdataCount;
}
public void setSupportsOdataCount(boolean supports) {
this.supportsOdataCount = supports;
}
@TranslatorProperty(display="Supports $skip", description="True, $skip is supported", advanced=true)
public boolean supportsOdataSkip() {
return supportsOdataSkip;
}
public void setSupportsOdataSkip(boolean supports) {
this.supportsOdataSkip = supports;
}
@TranslatorProperty(display="Supports $top", description="True, $top is supported", advanced=true)
public boolean supportsOdataTop() {
return supportsOdataTop;
}
public void setSupportsOdataTop(boolean supports) {
this.supportsOdataTop = supports;
}
@TranslatorProperty(display="Supports boolean functions with comparison",
description="True, you can use 'substringsof(a, b) eq true' for instance", advanced=true)
public boolean supportsOdataBooleanFunctionsWithComparison() {
return supportsOdataBooleanFunctionsWithComparison;
}
public void setSupportsOdataBooleanFunctionsWithComparison(boolean supports) {
this.supportsOdataBooleanFunctionsWithComparison = supports;
}
@Override
public boolean supportsCompareCriteriaEquals() {
return this.supportsOdataFilter;
}
@Override
public boolean supportsCompareCriteriaOrdered() {
return supportsOdataFilter;
}
@Override
public boolean supportsIsNullCriteria() {
return supportsOdataFilter;
}
@Override
public boolean supportsOrCriteria() {
return supportsOdataFilter;
}
@Override
public boolean supportsNotCriteria() {
return supportsOdataFilter;
}
@Override
public boolean supportsQuantifiedCompareCriteriaSome() {
return false; // TODO:for ANY
}
@Override
public boolean supportsQuantifiedCompareCriteriaAll() {
return false; // TODO:FOR ALL
}
@Override
@TranslatorProperty(display="Supports ORDER BY", description="True, if this connector supports ORDER BY", advanced=true)
public boolean supportsOrderBy() {
return supportsOdataOrderBy;
}
@Override
public boolean supportsOrderByUnrelated() {
return this.supportsOdataOrderBy;
}
@Override
public boolean supportsAggregatesCount() {
return supportsOdataCount;
}
@Override
public boolean supportsAggregatesCountStar() {
return supportsOdataCount;
}
@Override
public boolean supportsRowLimit() {
return supportsOdataTop;
}
@Override
public boolean supportsRowOffset() {
return supportsOdataSkip;
}
@Override
public boolean supportsOnlyLiteralComparison() {
return true;
}
@Override
public boolean useAnsiJoin() {
return true;
}
/**
*
* @param value
* @param expectedType
* @return
*/
public Object retrieveValue(Object value, Class<?> expectedType) {
if (value == null) {
return null;
}
if (value instanceof LocalDateTime) {
DateTime dateTime = ((LocalDateTime) value).toDateTime(DateTimeZone.forTimeZone(this.timeZone));
return new java.sql.Timestamp(dateTime.getMillis());
}
if (value instanceof LocalTime) {
return new java.sql.Timestamp(((LocalTime)value).toDateTimeToday().getMillis());
}
if (value instanceof UnsignedByte) {
return Short.valueOf(((UnsignedByte)value).shortValue());
}
if(expectedType.isArray() && value instanceof OCollection<?>) {
ArrayList<Object> result = new ArrayList<Object>();
OCollection<?> arrayValues = (OCollection<?>)value;
Iterator<?> it = arrayValues.iterator();
while(it.hasNext()) {
OSimpleObject<?> item = (OSimpleObject<?>)it.next();
result.add(retrieveValue(item.getValue(),expectedType.getComponentType()));
}
Object target = java.lang.reflect.Array.newInstance(expectedType.getComponentType(), result.size());
System.arraycopy(result.toArray(), 0, target, 0, result.size());
value = target;
}
return value;
}
public void convertToODataInput(Literal obj, StringBuilder sb) {
if (obj.getValue() == null) {
sb.append(NULL);
} else {
Class<?> type = obj.getType();
Object val = obj.getValue();
if(Number.class.isAssignableFrom(type)) {
sb.append(val);
} else if(type.equals(DataTypeManager.DefaultDataClasses.BOOLEAN)) {
sb.append(obj.getValue().equals(Boolean.TRUE) ? true : false);
} else if(type.equals(DataTypeManager.DefaultDataClasses.TIMESTAMP)) {
LocalDateTime date = new LocalDateTime(val);
sb.append("datetime'") //$NON-NLS-1$
.append(InternalUtil.formatDateTimeForXml(date))
.append("'"); //$NON-NLS-1$
} else if(type.equals(DataTypeManager.DefaultDataClasses.TIME)) {
LocalTime time = new LocalTime(((java.sql.Time)val).getTime());
sb.append("time'") //$NON-NLS-1$
.append(InternalUtil.formatTimeForXml(time))
.append("'"); //$NON-NLS-1$
} else if(type.equals(DataTypeManager.DefaultDataClasses.DATE)) {
sb.append("date'") //$NON-NLS-1$
.append(val)
.append("'"); //$NON-NLS-1$
} else if (type.equals(DataTypeManager.DefaultDataClasses.VARBINARY)) {
sb.append("X'") //$NON-NLS-1$
.append(val)
.append("'"); //$NON-NLS-1$
} else {
sb.append(Tokens.QUOTE)
.append(escapeString(val.toString(), Tokens.QUOTE))
.append(Tokens.QUOTE);
}
}
}
protected String escapeString(String str, String quote) {
return StringUtil.replaceAll(str, quote, quote + quote);
}
}