/*
* 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 java.util.ArrayList;
import java.util.List;
import org.odata4j.core.OCollection;
import org.odata4j.core.OCollections;
import org.odata4j.core.OObject;
import org.odata4j.core.OProperties;
import org.odata4j.core.OProperty;
import org.odata4j.core.OSimpleObjects;
import org.odata4j.edm.EdmCollectionType;
import org.odata4j.edm.EdmProperty.CollectionKind;
import org.odata4j.edm.EdmSimpleType;
import org.odata4j.edm.EdmType;
import org.teiid.language.Array;
import org.teiid.language.Delete;
import org.teiid.language.Expression;
import org.teiid.language.ExpressionValueSource;
import org.teiid.language.Insert;
import org.teiid.language.Literal;
import org.teiid.language.Update;
import org.teiid.metadata.Column;
import org.teiid.metadata.RuntimeMetadata;
import org.teiid.metadata.Table;
import org.teiid.translator.TranslatorException;
public class ODataUpdateVisitor extends ODataSQLVisitor {
protected ODataExecutionFactory executionFactory;
protected RuntimeMetadata metadata;
protected ArrayList<TranslatorException> exceptions = new ArrayList<TranslatorException>();
private String method = "POST"; //$NON-NLS-1$
private Table entity;
private List<OProperty<?>> payload;
private String uri;
public ODataUpdateVisitor(ODataExecutionFactory executionFactory, RuntimeMetadata metadata) {
super(executionFactory, metadata);
}
@Override
public void visit(Insert obj) {
this.method = "POST"; //$NON-NLS-1$
this.entity = obj.getTable().getMetadataObject();
this.uri = this.entity.getName();
final List<OProperty<?>> props = new ArrayList<OProperty<?>>();
int elementCount = obj.getColumns().size();
for (int i = 0; i < elementCount; i++) {
Column column = obj.getColumns().get(i).getMetadataObject();
List<Expression> values = ((ExpressionValueSource)obj.getValueSource()).getValues();
OProperty<?> property = readProperty(column, values.get(i));
props.add(property);
}
this.payload = props;
}
@Override
public void visit(Update obj) {
this.method = "PUT"; //$NON-NLS-1$
this.entity = obj.getTable().getMetadataObject();
visitNode(obj.getTable());
// only pk are allowed, no other criteria not allowed
obj.setWhere(buildEntityKey(obj.getWhere()));
// this will build with entity keys
this.uri = getEnitityURL();
if (this.uri.indexOf('(') == -1) {
this.exceptions.add(new TranslatorException(ODataPlugin.Util.gs(ODataPlugin.Event.TEIID17011, this.filter.toString())));
}
if (this.filter.length() > 0) {
this.exceptions.add(new TranslatorException(ODataPlugin.Util.gs(ODataPlugin.Event.TEIID17009, this.filter.toString())));
}
final List<OProperty<?>> props = new ArrayList<OProperty<?>>();
int elementCount = obj.getChanges().size();
for (int i = 0; i < elementCount; i++) {
Column column = obj.getChanges().get(i).getSymbol().getMetadataObject();
OProperty<?> property = readProperty(column, obj.getChanges().get(i).getValue());
props.add(property);
}
this.payload = props;
}
private OProperty<?> readProperty(Column column, Object value) {
if (value instanceof Array) {
EdmType componentType = ODataTypeManager.odataType(column.getRuntimeType());
if (componentType instanceof EdmCollectionType) {
componentType = ((EdmCollectionType)componentType).getItemType();
}
OCollection.Builder<OObject> b = OCollections.newBuilder(componentType);
List<Expression> values = ((Array)value).getExpressions();
for (int i = 0; i < values.size(); i++) {
Literal literal = (Literal)values.get(i);
b.add(OSimpleObjects.create((EdmSimpleType<?>)componentType, literal.getValue()));
}
return OProperties.collection(column.getName(),
new EdmCollectionType(CollectionKind.Collection,
componentType), b.build());
} else {
Literal literal = (Literal)value;
return OProperties.simple(column.getName(), literal.getValue());
}
}
@Override
public void visit(Delete obj) {
this.method = "DELETE"; //$NON-NLS-1$
this.entity = obj.getTable().getMetadataObject();
visitNode(obj.getTable());
// only pk are allowed, no other criteria not allowed
obj.setWhere(buildEntityKey(obj.getWhere()));
// this will build with entity keys
this.uri = getEnitityURL();
if (this.uri.indexOf('(') == -1) {
this.exceptions.add(new TranslatorException(ODataPlugin.Util.gs(ODataPlugin.Event.TEIID17011, this.filter.toString())));
}
if (this.filter.length() > 0) {
this.exceptions.add(new TranslatorException(ODataPlugin.Util.gs(ODataPlugin.Event.TEIID17009, this.filter.toString())));
}
}
public Table getTable() {
return this.entity;
}
@Override
public String buildURL() {
return this.uri;
}
public String getMethod() {
return this.method;
}
public List<OProperty<?>> getPayload() {
return this.payload;
}
}