/**
* Returns the cypher representation of the chain of relationships,
* <p>
* Example:
* <pre>
* (n1:ENTITY {id: {n1}.id}) -[r0:type0 {property: {r0}.property}]-> (n2:EMBEDDED {property: {n2}.property}) -[r1:type1]-> (n3:EMBEDDED)
* <pre>
*/
public String toCypher() {
StringBuilder builder = new StringBuilder();
builder.append(start.toCypher());
for (NextRelationship relationship : stream) {
builder.append(" -[");
if (!relationship.getProperties().isEmpty()) {
builder.append(relationship.getAlias());
}
builder.append(":");
builder.append(relationship.getRelationshipType());
if (!relationship.getProperties().isEmpty()) {
builder.append(" {");
boolean first = true;
for (String property : relationship.getProperties().keySet()) {
if (first) {
first = false;
} else {
builder.append(", ");
}
escapeIdentifier(builder, property);
builder.append(": {");
builder.append(relationship.getAlias());
builder.append("}.");
escapeIdentifier(builder, property);
}
builder.append(" }");
}
builder.append("]-> ");
builder.append(relationship.getEnd().toCypher());
}
return builder.toString();
}
/** Define a property on the last relationship of the chain. */
public RelationshipsChainForGraphAssertions property(String name, Object value) {
NextRelationship relationship = stream.get(stream.size() - 1);
@SuppressWarnings("unchecked")
Map<String, Object> properties = (Map<String, Object>) params.get(relationship.getAlias());
if (properties == null) {
params.put(relationship.getAlias(), relationship.getProperties());
}
relationship.addProperty(name, value);
return this;
}