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com.orientechnologies.orient.core.sql.parser.OCreateLinkStatement Maven / Gradle / Ivy
/* Generated By:JJTree: Do not edit this line. OCreateLinkStatement.java Version 4.3 */
/* JavaCCOptions:MULTI=true,NODE_USES_PARSER=false,VISITOR=true,TRACK_TOKENS=true,NODE_PREFIX=O,NODE_EXTENDS=,NODE_FACTORY=,SUPPORT_CLASS_VISIBILITY_PUBLIC=true */
package com.orientechnologies.orient.core.sql.parser;
import com.orientechnologies.common.exception.OException;
import com.orientechnologies.orient.core.command.OCommandContext;
import com.orientechnologies.orient.core.db.ODatabaseDocumentInternal;
import com.orientechnologies.orient.core.db.document.ODatabaseDocument;
import com.orientechnologies.orient.core.db.record.OIdentifiable;
import com.orientechnologies.orient.core.db.record.ORecordLazyList;
import com.orientechnologies.orient.core.db.record.ORecordLazySet;
import com.orientechnologies.orient.core.exception.OCommandExecutionException;
import com.orientechnologies.orient.core.id.ORID;
import com.orientechnologies.orient.core.metadata.schema.OClass;
import com.orientechnologies.orient.core.metadata.schema.OProperty;
import com.orientechnologies.orient.core.metadata.schema.OType;
import com.orientechnologies.orient.core.record.impl.ODocument;
import com.orientechnologies.orient.core.record.impl.ODocumentHelper;
import com.orientechnologies.orient.core.sql.OCommandSQLParsingException;
import com.orientechnologies.orient.core.sql.executor.OInternalResultSet;
import com.orientechnologies.orient.core.sql.executor.OResultInternal;
import com.orientechnologies.orient.core.sql.executor.OResultSet;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
public class OCreateLinkStatement extends OSimpleExecStatement {
protected OIdentifier name;
protected OIdentifier type;
protected OIdentifier sourceClass;
protected OIdentifier sourceField;
protected ORecordAttribute sourceRecordAttr;
protected OIdentifier destClass;
protected OIdentifier destField;
protected ORecordAttribute destRecordAttr;
protected boolean inverse = false;
boolean breakExec = false; // for timeout
public OCreateLinkStatement(int id) {
super(id);
}
public OCreateLinkStatement(OrientSql p, int id) {
super(p, id);
}
@Override
public OResultSet executeSimple(OCommandContext ctx) {
execute(ctx);
OInternalResultSet rs = new OInternalResultSet();
OResultInternal result = new OResultInternal();
result.setProperty("operation", "create link");
result.setProperty("name", name.getValue());
result.setProperty("fromClass", sourceClass.getStringValue());
result.setProperty("toClass", destClass.getStringValue());
rs.add(result);
return rs;
}
/** Execute the CREATE LINK. */
private Object execute(OCommandContext ctx) {
if (destField == null)
throw new OCommandExecutionException(
"Cannot execute the command because it has not been parsed yet");
final ODatabaseDocumentInternal database = getDatabase();
if (!(database.getDatabaseOwner() instanceof ODatabaseDocument))
throw new OCommandSQLParsingException(
"This command supports only the database type ODatabaseDocumentTx and type '"
+ database.getClass()
+ "' was found");
final ODatabaseDocument db = (ODatabaseDocument) database.getDatabaseOwner();
OClass sourceClass =
database
.getMetadata()
.getImmutableSchemaSnapshot()
.getClass(getSourceClass().getStringValue());
if (sourceClass == null)
throw new OCommandExecutionException(
"Source class '" + getSourceClass().getStringValue() + "' not found");
OClass destClass =
database
.getMetadata()
.getImmutableSchemaSnapshot()
.getClass(getDestClass().getStringValue());
if (destClass == null)
throw new OCommandExecutionException(
"Destination class '" + getDestClass().getStringValue() + "' not found");
Object value;
String cmd = "select from ";
if (destField != null && !ODocumentHelper.ATTRIBUTE_RID.equals(destField.value)) {
cmd = "select from " + getDestClass() + " where " + destField + " = ";
}
List result;
ODocument target;
Object oldValue;
long total = 0;
String linkName = name == null ? sourceField.getStringValue() : name.getStringValue();
boolean multipleRelationship;
OType linkType = OType.valueOf(type.getStringValue().toUpperCase(Locale.ENGLISH));
if (linkType != null)
// DETERMINE BASED ON FORCED TYPE
multipleRelationship = linkType == OType.LINKSET || linkType == OType.LINKLIST;
else multipleRelationship = false;
try {
// BROWSE ALL THE RECORDS OF THE SOURCE CLASS
for (ODocument doc : db.browseClass(sourceClass.getName())) {
if (breakExec) {
break;
}
value = doc.getProperty(sourceField.getStringValue());
if (value != null) {
if (value instanceof ODocument || value instanceof ORID) {
// ALREADY CONVERTED
} else if (value instanceof Collection) {
// TODO
} else {
// SEARCH THE DESTINATION RECORD
target = null;
if (destField != null
&& !ODocumentHelper.ATTRIBUTE_RID.equals(destField.value)
&& value instanceof String)
if (((String) value).length() == 0) value = null;
else value = "'" + value + "'";
try (OResultSet rs = database.query(cmd + value)) {
result = toList(rs);
}
if (result == null || result.size() == 0) value = null;
else if (result.size() > 1)
throw new OCommandExecutionException(
"Cannot create link because multiple records was found in class '"
+ destClass.getName()
+ "' with value "
+ value
+ " in field '"
+ destField
+ "'");
else {
target = result.get(0);
value = target;
}
if (target != null && inverse) {
// INVERSE RELATIONSHIP
oldValue = target.getProperty(linkName);
if (oldValue != null) {
if (!multipleRelationship) multipleRelationship = true;
Collection coll;
if (oldValue instanceof Collection) {
// ADD IT IN THE EXISTENT COLLECTION
coll = (Collection) oldValue;
target.setDirty();
} else {
// CREATE A NEW COLLECTION FOR BOTH
coll = new ArrayList(2);
target.setProperty(linkName, coll);
coll.add((ODocument) oldValue);
}
coll.add(doc);
} else {
if (linkType != null)
if (linkType == OType.LINKSET) {
value = new ORecordLazySet(target);
((Set) value).add(doc);
} else if (linkType == OType.LINKLIST) {
value = new ORecordLazyList(target);
((ORecordLazyList) value).add(doc);
} else
// IGNORE THE TYPE, SET IT AS LINK
value = doc;
else value = doc;
target.setProperty(linkName, value);
}
target.save();
} else {
// SET THE REFERENCE
doc.setProperty(linkName, value);
doc.save();
}
total++;
}
}
}
if (total > 0) {
if (inverse) {
// REMOVE THE OLD PROPERTY IF ANY
OProperty prop = destClass.getProperty(linkName);
destClass = db.getMetadata().getSchema().getClass(getDestClass().getStringValue());
if (prop != null) destClass.dropProperty(linkName);
if (linkType == null) linkType = multipleRelationship ? OType.LINKSET : OType.LINK;
// CREATE THE PROPERTY
destClass.createProperty(linkName, linkType, sourceClass);
} else {
// REMOVE THE OLD PROPERTY IF ANY
OProperty prop = sourceClass.getProperty(linkName);
sourceClass = db.getMetadata().getSchema().getClass(getDestClass().getStringValue());
if (prop != null) sourceClass.dropProperty(linkName);
// CREATE THE PROPERTY
sourceClass.createProperty(linkName, OType.LINK, destClass);
}
}
} catch (Exception e) {
throw OException.wrapException(
new OCommandExecutionException("Error on creation of links"), e);
}
return total;
}
private List toList(OResultSet rs) {
if (!rs.hasNext()) {
return null;
}
List result = new ArrayList<>();
while (rs.hasNext()) {
result.add((ODocument) rs.next().getElement().orElse(null));
}
return result;
}
@Override
public void toString(Map params, StringBuilder builder) {
builder.append("CREATE LINK ");
name.toString(params, builder);
builder.append(" TYPE ");
type.toString(params, builder);
builder.append(" FROM ");
sourceClass.toString(params, builder);
builder.append(".");
if (sourceField != null) {
sourceField.toString(params, builder);
} else {
sourceRecordAttr.toString(params, builder);
}
builder.append(" TO ");
destClass.toString(params, builder);
builder.append(".");
if (destField != null) {
destField.toString(params, builder);
} else {
destRecordAttr.toString(params, builder);
}
if (inverse) {
builder.append(" INVERSE");
}
}
@Override
public void toGenericStatement(StringBuilder builder) {
builder.append("CREATE LINK ");
name.toGenericStatement(builder);
builder.append(" TYPE ");
type.toGenericStatement(builder);
builder.append(" FROM ");
sourceClass.toGenericStatement(builder);
builder.append(".");
if (sourceField != null) {
sourceField.toGenericStatement(builder);
} else {
sourceRecordAttr.toGenericStatement(builder);
}
builder.append(" TO ");
destClass.toGenericStatement(builder);
builder.append(".");
if (destField != null) {
destField.toGenericStatement(builder);
} else {
destRecordAttr.toGenericStatement(builder);
}
if (inverse) {
builder.append(" INVERSE");
}
}
@Override
public OCreateLinkStatement copy() {
OCreateLinkStatement result = new OCreateLinkStatement(-1);
result.name = name == null ? null : name.copy();
result.type = type == null ? null : type.copy();
result.sourceClass = sourceClass == null ? null : sourceClass.copy();
result.sourceField = sourceField == null ? null : sourceField.copy();
result.sourceRecordAttr = sourceRecordAttr == null ? null : sourceRecordAttr.copy();
result.destClass = destClass == null ? null : destClass.copy();
result.destField = destField == null ? null : destField.copy();
result.destRecordAttr = destRecordAttr == null ? null : destRecordAttr.copy();
result.inverse = inverse;
return result;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
OCreateLinkStatement that = (OCreateLinkStatement) o;
if (inverse != that.inverse) return false;
if (name != null ? !name.equals(that.name) : that.name != null) return false;
if (type != null ? !type.equals(that.type) : that.type != null) return false;
if (sourceClass != null ? !sourceClass.equals(that.sourceClass) : that.sourceClass != null)
return false;
if (sourceField != null ? !sourceField.equals(that.sourceField) : that.sourceField != null)
return false;
if (sourceRecordAttr != null
? !sourceRecordAttr.equals(that.sourceRecordAttr)
: that.sourceRecordAttr != null) return false;
if (destClass != null ? !destClass.equals(that.destClass) : that.destClass != null)
return false;
if (destField != null ? !destField.equals(that.destField) : that.destField != null)
return false;
if (destRecordAttr != null
? !destRecordAttr.equals(that.destRecordAttr)
: that.destRecordAttr != null) return false;
return true;
}
@Override
public int hashCode() {
int result = name != null ? name.hashCode() : 0;
result = 31 * result + (type != null ? type.hashCode() : 0);
result = 31 * result + (sourceClass != null ? sourceClass.hashCode() : 0);
result = 31 * result + (sourceField != null ? sourceField.hashCode() : 0);
result = 31 * result + (sourceRecordAttr != null ? sourceRecordAttr.hashCode() : 0);
result = 31 * result + (destClass != null ? destClass.hashCode() : 0);
result = 31 * result + (destField != null ? destField.hashCode() : 0);
result = 31 * result + (destRecordAttr != null ? destRecordAttr.hashCode() : 0);
result = 31 * result + (inverse ? 1 : 0);
return result;
}
public OIdentifier getName() {
return name;
}
public OIdentifier getType() {
return type;
}
public OIdentifier getSourceClass() {
return sourceClass;
}
public OIdentifier getSourceField() {
return sourceField;
}
public ORecordAttribute getSourceRecordAttr() {
return sourceRecordAttr;
}
public OIdentifier getDestClass() {
return destClass;
}
public OIdentifier getDestField() {
return destField;
}
public ORecordAttribute getDestRecordAttr() {
return destRecordAttr;
}
public boolean isInverse() {
return inverse;
}
}
/* JavaCC - OriginalChecksum=de46c9bdaf3b36691764a78cd89d1c2b (do not edit this line) */
