Neo4jCursor Class

Implementation of cursor for Neo4j results

• fetch()
• first()
• current()
• next()
• previous()
• each(callback)
• forEach(callback)

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fetch()

Returns array of fetched rows. If query was passed with reactive option - data will be updated each event loop.

• Returns: {[Object]}

db.query("MATCH n RETURN n").fetch();

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first()

Move cursor to first item and return it.

• Returns: {[Object]} - Array of data instances or undefined if cursor has no items

db.query("MATCH n RETURN n").first();

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current()

Get current data instance(s) on cursor.

• Returns: {[Object]} - Array of data instances or undefined if cursor has no items

db.query("MATCH n RETURN n").current();

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next()

Go to next item on cursor and return it.

• Returns: {[Object]} - Array of data instances or undefined if cursor has no items

db.query("MATCH n RETURN n").next();

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previous()

Go to previous item on cursor and return it.

• Returns: {[Object]} - Array of data instances or undefined if cursor has no items

db.query("MATCH n RETURN n").previous();

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each(callback)

Iterates thought Neo4j query results. And returns data as data instance(s). This function will move cursor to latest item.

• callback {Function} - Callback function, with data (as Neo4jData, Neo4jRelationship or Neo4jNode instance(s)), num, cursor arguments
• Returns: {undefined}

db.query("MATCH n RETURN n").each( (data, i, cursor) => {
  data.n.property({updatedAt: +new Date()});
  data.n.get();
  data.n.delete();
});

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forEach(callback)

Iterates though Neo4j query results. If query was passed with reactive option - data will be updated each event loop.

• callback {Function} - Callback function, with data (plain object), num, cursor arguments
• Returns: {undefined}

db.query("MATCH n RETURN n").forEach( (data, i, cursor) => {
  data.n;
});